It is recommended to offer, after the obligatory Maghrib Prayer, a twenty unit prayer and to recite in each unit Surah al-Fatihah once and Surah al-Tawhid onceWhoever offers this prayer, his family members, property, sons, and he will be kept saved from harm, rescued against the grave torture, and pass the Sirat as swiftly as lightning without being called to account.
After the `Isha' Prayer, it is recommended to offer a two unit prayer in the first unit of which Surah al-Fatihah should be recited once, Surah al-Inshirah (No. 94) recited once, and Surah al-Tawhid recited three times. In the second unit, Surahs al-Fatihah, al-Inshirah, al-Tawhid, al-Falaq, and al-Nas should be recited once each. After taslim, the following litany should be repeated thirty times:
لاَ إِلٰهَ إِلاَّ ٱللَّهُ
la ilaha illa allahu
There is no god save Allah.
Similarly, this imploration of blessings (SALAWAT) should be repeated thirty times:
اللَّهُمَّ صَلِّ عَلَىٰ مُحَمَّدٍ وَآلِ مُحَمَّدٍ
allahumma salli `ala muhammadin wa ali muhammadin
O Allah, (please do) send blessings to Muhammad and the Household of Muhammad.
The reward of this prayer is that whoever offers it, will have all his sins forgiven and will return as sin-free as the day of his birth.
It is recommended to offer a thirty unit prayer in each unit Surah al-Fatihah is recited once, Surah al-Kafirun (No. 109) recited once, and Surah al-Tawheed repeated three times
Referring to the recommended rites at the first night of Rajab, Shaykh al-Tusi has mentioned, in his book of Misbah al-Mutahajjid, that Abu’l-Bukhtari Wahab ibn Wahab has narrated on the authority of Imam al-Sadiq (`a) on the authority of his father (`a) on the authority of his grandfather (`a) who said that Imam `Ali (`a) used to devote himself to acts of worship in an exclusive way at four nights, (1) the first night of Rajab, (2) the middle night (i.e. fifteen) of Sha`ban, (3) the `id al-Fitr Night (i.e. the first night of Shawwal), and (4) the Nahr Night (the tenth of Dhu’l-hijjah). Imam Abu-Ja`far II (`a) is reported to have recommended saying this the following supplicatory prayer at the first night of Rajab after the `Isha' Prayer:
It has been narrated from Imam Jafar Sadiq; In the Name of Allah, the All-beneficent the All-merciful. You may say the following (supplicatory prayer) each day in Rajab; in mornings, evenings, and after each of the obligatory prayers:
اللَّهُمَّ إنِّي اسْالُكَ بِانَّكَ مَلِكٌ
allahumma inni as'aluk bi'annaka malikun
O Allah, I beseech You in the name of Your being the King,
وَانَّكَ عَلَىٰ كُلِّ شَيْءٍ مُقْتَدِرٌ
wa annaka `ala kulli shay'in muqtadirun
having absolute power over all things,
وَانَّكَ مَا تَشَاءُ مِنْ امْرٍ يَكُونُ
wa annaka ma tasha'u min amrin yakunu
and whatever matter You want to happen shall happen.
Ibn Ashyam says: It is advisable to say this supplicatory prayer after offering the eight-unit salat al-Layl (Night Prayer) and before offering the three-unit salat al-witr. Immediately after offering this prayer, it is recommended to say this supplicatory prayer while sitting: