This day is one of the great feast days. On this day, the Holy Prophet (s.a.w.a.) was appointed for conveying the Divine Mission when Archangel Gabriel first came to him with the Divine Revelation. Several rites are advisably practiced on this day. Some of them are as follows:
First: It is recommended to bathe oneself on this day.
Second: It is recommended to observe fasting. In fact, this day is one of the four days that are dedicated to fasting in the whole year. The reward of observing fasting on this day is equal to seventy year fasting.
Third: It is recommended to repeat very frequently the invocation of blessings upon Prophet Muhammad and his Household.
Fourth: It is recommended to visit the tombs of the Holy Prophet and Imam Ali, peace be upon them and their Household.
In his book entitled Misbah al-Mutahajjid, Shaykh al-Tusi mentions that al-Rayyan ibn al-Salt is reported as saying that Imam Muhammad al-Jawad(a.s.) observed fasting on the fifteenth and the twenty-seventh of Rajab while he was in Baghdad. Following him, all of his followers observed fasting. He then ordered us to offer the prayer that consists of twelve units at each of which Surah al-Faatehah and another Surah should be recited. At the accomplishment of this prayer, it is recommended to recite Surahs al-Faatehah, al-Tawheed, al-Falaq, and al-Nas each for times. Then it is recommended to say the following litany four times:
لَآ اِلٰہَ اِلَّااللّٰهُ وَاللّٰهُ اَکْبَرُ سُبْحَانَ اللّٰهِ وَالْحَمْدُ لِلّٰهِ وَلَا حَوْلَ وَلَا قُوَّۃَ اِلَّا بِاللّٰهِ الْعَلِیِّ الْعَظِیْمِ ۔
Then, it is recommended to repeat the following four times:
اَللّٰهُ اللّٰهُ رَبِّیْ لَآ اُشْرِکُ بِہٖ شَیْئًا۔
Then, it is recommended to say the following four times, too:
لَا ٓاُشْرِکْ بِرَبِّیْ اَحَدًا
There Is No God Save Allah. Allah Is The Greatest. Glory Be To Allah. Praise Be To Allah. There Is No Might And No Power Save In Allah, The Highest, The Greatest.
Then, it is recommended to repeat the following four times:
Allah! Allah! My Lord I Do Not Associate Anything With Him
Then, it is recommended to say the following four times, too:
I Do Not Associate Anything With Him
Shaykh al-Tusi has also reported Abu’l-Qasim Husayn ibn Ruh - may Allah have mercy upon him - as saying: On this day, you may offer a prayer consisting of twelve units at each of which you may recite Surah al-Faatehah and any other Surah. After each couple of units, you may say the following:
اَلْحَمْدُ لِلّٰهِ الَّذِیْ لَمْ یَتَّخِذْ وَلَدًا وَلَمْ یَکُنْ لَہٗ شَرِیْکٌ فِی المُلْکِ وَلَمْ یَکُنْ لَہٗ وَلِیٌّ مِنَ الذُّلِّ وَکَبِّرْہُ تَکْبِیْرًا یَاعُدَّتِیْ فِیْ مُدَّتِیْ یَاصَاحِبِی فِیْ شِدَّتِیْ یَاوَلِیِّ فِیْ نِعْمِتِیْ یَاغِیَاثِیْ فِیْ رَغْبَتِیْ یَانَجَاحِیْ فِیْ حَاجَتِیْ یَاحَافِظِیْ فِیْ غَیْبَتِیْ یَاکَافِیَّ فِیْ وَحْدَتِیْ یَآاُنْسِیْ فِیْ وَحْشَتِیْ اَنْتَ السَّاتِرُ عَوْرَتِیْ فَلَکَ الْحَمْدُ وَاَنْتَ الْمُقِیْلُ عَثْرَتِیْ فَلَکَ الْحَمْدُ وَاَنْتَ الْمُنْعِشُ صَرْعَتِیْ فَلَکَ الْحَمْدُ صَلِّ عَلٰی مُحَمَّدٍ وَاٰلِ مُحَمَّدٍ وَاستُرُ عَوْرَتِیْ وَاٰمِنْ رَوْعَتِیْ وَاَقِلْنِیْ عَثْرَتِیْ وَاصْفَحْ عَنْ جُرْمِیْ وَتَجَاوَزْ عَنْ سَیِّئَاتِیْ فِیْ اَصْحَابِ الْجَنَّۃِ وَعْدَ الصِّدقِ الَّذِیْ کَانُوْا یُوعَدُوْنَ۔
When you accomplish the prayer, you should recite Surahs al-Faatehah, al-Tawheed, al-Falaq, al-Nas, al-Kafirun, al-Qadr, and Ayah al-Kursi seven times.
Then You should then repeat the following seven times:
لَآ اِلٰہَ اِلَّا للّٰهُ وَاللّٰهُ اَکْبَرُوَسُبْحَانَ اللّٰهِ وَلَا حَوْلَ وَلَا قُوَّۃَ اِلّاَ بِاللّٰهِ
You should then say the following seven times:
اَﷲُاَﷲُرَبِّیْ لَآ اُشْرِکُ بِہٖ شَیْئًا
All praise is due to Allah, Who has not taken a son and Who has not a partner in the kingdom, and Who has not a helper to save Him from disgrace; and proclaim His greatness with thorough proclamation. O my Supporter throughout my lifetime! O my Companion in hardships! O the provider of me with all graces that I experience! O my Succor in my desires! O the source of success of my needs! O my guardian while I am absent! O He Who is sufficient for me when I am alone! O my entertainment in my loneliness! You alone conceal my faults! So, all praise be to You. You alone overlook my slips. So, all praise be to You. You alone revive my deterioration. So, all praise be to You. (Please do) send blessings upon Muhammad and the Household of Muhammad and conceal my defects, and secure my apprehensions, and oversee my slips, and pardon my offenses, and overlook my evildoings and include me with the People of Paradise; the promise of truth which they were promised.
When you accomplish the prayer, you should recite Surahs al-Faatehah, al-Tawheed, al-Falaq, al-Nas, al-Kafirun, al-Qadr, and Ayah al-Kursi seven times.
Then You should then repeat the following seven times:
There is no god save Allah Allah is the Most Great Glory be to Allah and there is neither might nor power save with Allah.
You should then say the following seven times:
ٓAllah, Allah is my Lord. I associate none with Him.
After that, you may submit your needs.
As is mentioned in Iqbal al-A’mal and some manuscripts of Misbah al-Mutahajjid, it is recommended to say the following supplicatory prayer on this day:
یَامَنْ اَمَرَ بِالْعَفْوِ وَالتَّجَاوُزِ وَضَمَّنَ نَفْسَہُ الْعَفْوَ وَالتَّجَاوُزَ یَامَنْ عَفٰی وَتَجَاوَزَ اُعْفُ عَنِّیْ وَتَجَاوَزْ یَاکَرِیْمُ اَللّٰھُمَّ وَقَدْ اَکْدَی الطَّلَبُ وَاَعْیَتِ الْحِیْلَۃُ وَالْمَذْھَبُ وَدَرَسَتِ الْاٰمَالُ وَانْقَطَعَ الرَّجَآئُ اِلّاَ مِنْکَ وَحْدَکَ لَا شَرِیْکَ لَکَ اَللّٰھُمَّ اِنِّیْ اَجِدُ سُبُلَ الْمَطَالِبِ اِلَیْکَ مُشْرَعَۃً وَمَنَاھِلَ الرَّجَآئِ لَدَیْکَ مُتْرَعَۃً وَاَبْوَابَ الدُّعَآئِ لِمَنْ دَعَاکَ مُفَتَّحَۃً وَالْاِسْتِعَانَۃَ لِمَنْ اِسْتَعَانَ بِکَ مُبَاحَۃً وَاَعْلَمُ اَنَّکَ لِدَاعِیْکَ بِمَوْضِعِ اِجَابَۃً وَلِلصَّارِخِ اِلَیْکَ بِمَرْصَدِ اِغَاثَۃٍ وَاَنَّ فِی اللَّھْفِ اِلٰی جُوْدِکَ وَالضَّمَانِ بِعِدَتِکَ عِوَضًا مِّنْ مَنْعِ الْبَاخِلِیْنَ وَمَنْدُوْحَۃً عَمَّا فِیْ اَیْدِی الْمُسْتَاْثِرِیْنَ وَاَنَّکَ لَاتَحْتَجِبُ عَنْ خَلْقِکَ اِلَّآ اَنْ تَحْجُبَھُمُ الْاَعْمَالُ دُوْنَکَ وَقَدْ عَلِمْتُ اَنَّ اَفْضَلَ زَادِ الرَّاحِلِ اِلَیْکَ عَزْمُ اِرَادَۃٍ یَخْتَارُکَ بِھَا وَقَدْ نَاجَاکَ بِعَزْمِ الْاِرَادَۃِ قَلْبِیْ وَاَسْئَلُکَ بِکُلِّ دَعْوَۃٍ دَعَاکَ بِھَا رَاجٍ بَلَّغْتَہٗٓ اَمَلَہٗٓ اَوْصَارِخٌ اِلَیْکَ اَغَثْتَ صَرْخَتَہٗٓ اَوْ مَلْھُوفٌ مَکْرُوْبٌ فَرَّجْتَ کَرْبَہٗٓ اَوْ مُذْنِبٌ خَاطِیٌٔ غَفَرْتَ لَہٗ اَوْمُعَافِیٌ اَتْمَمْتُ نِعْمَتَکَ عَلَیْہِ اَوْ فَقِیْرٌ اَھْدَیْتَ غِنَاکَ اِلَیْہِ وَلِتِلْکَ الدَّعْوَۃِ عَلَیْکَ حَقٌّ وَعِنْدَکَ مَنْزِلَۃٌ اِلَّا صَلَّیْتَ عَلٰی مُحَمَّدٍ وَاٰلِ مُحَمَّدٍ وَقَضَیْتَ حَوَآئِجِیْ حَوَآئِجَ الدُّنْیَا وَالْاٰخِرَۃِ وَھٰذَا رَجَبٌ نِالْمُرَجَّبُ الْمُکَرَّمُ الَّذِیْ اَکْرَمْتَنَا بِہٖٓ اَوَّلُ اَشْھُرِ الْحُرُمِ اَکْرَمْتَنَا بِہٖ مِنْ بَیْنِ الْأُمَمِ یَاذَا الْجُودِ وَالْکَرَمِ فَنَسْئَلُکَ بِہِ وَبِاِسْمِکَ الْاَعْظَمِ الْاَعْظَمِ الْاَعْظَمِ الْاَجَلِّ الْاَکْرَمِ الَّذِیْ خَلَقْتَہُ فَاَسْتَقَرَّ فِیْ ظِلِّکَ فَلَا یَخْرُجُ مِنْکَ اِلٰی غَیْرِکَ اَنْ تُصَلِّیَ عَلٰی مُحَمَّدٍ وَاَھْلِ بَیْتِہِ الطَّاھِرِیْنَ وَتَجْعَلَنَا مِنَ الْعَامِلِیْنَ فِیْہِ بِطَاعَتِکَ وَلْأَمِلِیْنَ فِیْہِ بِشَفَاعَتِکَ اَللّٰھُمَّ وَاھْدِنَا اِلٰی سَوَآئِ السَّبِیْلِ وَاجْعَلْ مَقِیْلَنَا عِنْدَکَ خَیْرَ مَقِیْلٍ فِیْ ظِلٍّ ظَلِیْلٍ فَاِنَّکَ حَسْبُنَا وَنِعْمَ الْوَکِیْلُ وَالسَّلَامُ عَلٰی عِبَادِہِ الْمُصْطَفَیْنَ وَصَلَوَاتُہٗ عَلَیْھِمْ اَجْمَعِیْنَ اَللّٰھُمَّ وَبَارِکْ لَنَا فِیْ یَوْمِنَا ھٰذَا الَّذِیْ فَضَّلْتَہُ وَبِکَرَامَتِکَ جَلَّلْتَہُ وَبِالْمَنْزِلِ الْعَظِیْمِ الْاَعْلٰی اَنْزَلْتَہٗ صَلِّ عَلَی مَنْ فِیْہِ اِلٰی عِبَادِکَ اَرْسَلْتَہٗ وَبِالْمَحَلِّ الْکَرِیْمِ اَحْلَلْتَہٗٓ اَللّٰھُمَّ صَلِّ عَلَیْہِ صَلٰوۃً دَآئِمَّۃً تَکُوْنُ لَکَ شُکْرًا وَلَنَا ذُخْرًا وَاجْعَلْ لَنَا مِنْ اَمْرِنَا یُسْرًا وَاخْتِمْ لَنَا بِالسَّعَادَۃِ اِلَی مُنْتَھٰی اٰجَالِنَا وَقَدْ قَبِلْتَ الْیَسِیْرَ مِنْ اَعْمَالِنَا وَبَلَّغْتَنَا بِرَحْمَتِکَ اَفْضَلَ اٰمَالِنَا اِنَّکَ عَلٰی کُلِّ شَیْئٍ قَدِیْرٌوَصَلَّی اللّٰہُ عَلٰی مُحَمَّدٍ وَاٰ لِہٖ وَسَلَّمْ۔
O He Who has ordered us to forgive and overlook and has taken upon Himself to forgive and overlook! O He Who did forgive and overlook: (please do) forgive me and overlook (my evildoings) O the All-generous. O Allah: surely, all requests have been rejected, and all means and ways have been inaccessible, and all hopes have been eradicated, and all expectations have been cut off from everybody save You alone, there is no partner with You. O Allah: I find the ways to requesting from You wide open, and springs of hoping for You quenching, and doors of supplication unlocked for him who implores You, and Your aid available for those who seek it. I also know that You are in the position of response for him who beseeches You, and in the position of relief for him who resorts to You, and that hastening to Your magnanimity and the reliance upon Your promise compensate from the stinginess of the misery ones and suffice from that which is grasped by the mean ones. And [I know for sure] that You never screen Yourself against Your beings but it is their evildoings that prevent them from journeying toward You. I have also known for sure that the best provisions of his who intends to travel to You is a true willpower by which He chooses You among others. Hence, my heart has called at You with full willpower; and I pray You in the name of all supplications said by a hopeful and thus You have achieved his hope, or said by a seeker of aid and thus You have admitted his request, or said by an aggrieved, depressed one and thus You have relieved him, or said by a guilty sinner and thus You have forgiven him, or said by a healthy one and thus You have perfected Your favors on him, or said by a poor one and thus You have conferred upon him with Your wealth, and that these supplications occupy a considerable position with You and enjoy a standing with You— I pray You to send blessings upon Muhammad and the Household of Muhammad and to settle all my needs for this world and the Next World. This is Rajab, the honored and dignified month, which You have honored us through it, being the first of the Sacred Months, and You have selected us for this honor among the other nations. O the Lord of Magnanimity and Generosity. I thus beseech You by Your Name, the grandest, the grandest, the grandest, majestic that You have created so that it has settled under Your Shadow and it thus shall never transfer to anyone other than You— I beseech You to send blessings upon Muhammad and his Household, the immaculate, and to include us, during this month, with those who practice acts of obedience to You and those who hope for Your admission. O Allah: (please do) lead us to the Right Path, and choose for us the best resting-place with You, under a dense shade and abundant possession. Surely, You are Sufficient for us! Most Excellent are You, and in You do we trust! Peace be upon His servants, the chosen, and His blessings be upon them all. O Allah: (please do) bless us on this day that You have honored, and covered with Your nobility, and implanted in the great and highest Dwelling. (Please do) send blessings upon him whom You sent (as Your Messenger) to Your servants and whom You accommodated in the Noble Place. O Allah: send upon him blessing that is never-ending being in the form of thanks to You and reward to us. And make easy for us all our affairs; and make our end result up to the last of our lives pleasant after You accept our little deed and achieve for us all our hopes out of Your mercy. Verily, You have power over all things. May Allah bless and exalt Muhammad and his Household.