Sayyid Ibn Tawus, in Iqbal al-A’mal, has mentioned a number of supplicatory prayers and a big number of prayers that are advisably said and offered at this tenth night of Muharram. He has also cited the big rewards of saying and offering these supplications and prayers. For instance, it is recommended to offer a one hundred unit prayer with Surah al-Faatehah once and Surah al-Tawheed three times. After accomplishment, the doxological statements are repeated seventy times:
سُبْحَانَ اللّٰهِ، وَالْحَمْدُ ﷲِ، وَلَآ اِلٰہَ اِلَّا اللّٰهُ، وَاللّٰهُ اَکْبَرُ، وَلَا حَوْلَ وَلَا قُوَّۃَ اِلَّا بِاللّٰهِ العَلِیِّ العَظِیْمِ
All glory be to Allah,all praise be to Allah,there is no god save Allah,Allah is the Greatest,and there is neither might nor power save with Allah, the All-high the All-great.
According to another narration, one should implore for Almighty Allah’s forgiveness after the previously mentioned statements.
It is also recommended to offer a four unit prayer at the last of this night, reciting Surah al-Faatehah once and repeating Ayah al-Kursi and Surahs al-Tawheed, al-Falaq, al-Nas ten times each. After accomplishment, Surah al-Tawheed is repeated one hundred times.
It is also recommended to offer a four unit prayer with Surah al-Faatehah once and Surah al-Tawheed fifty times. Matching the prayer of Imam AliAmeer al-Momineen(a.s.), which brings about a tremendous reward, Sayyid Ibn Tawus says after citing this prayer, “When you finish the fourth units, you may mention Almighty Allah, invoke blessings upon the Holy Prophet and his Household, and curse their enemies as many times as possible.