About Tasbeeh Taraweeh:
Tarawih prayers are prayed in pairs of 2 and can be prayed in at least 20 raka‘āt according to two schools, Hanafis and Shafi’i, of Sunni Islam. Some believe that 8, 12 or 20 can be read. Due to varying numbers, the number of prayers performed is broad in scope. This prayer is performed only during Ramadan of the Islamic calendar after Salah of Isha’.
A break is taken after every 4 rak’ah – Malik ibn Anas added 4 raka’h in each break (to account for the time spent in Tawaf, although since Tawaf is something which takes place during the Hajj in Mecca, has nothing to do with the subject of this article, let alone the number of raka’at, and reference to it should be replaced with something which makes more sense, thus taking the total number to 36.
Muslims believe it is customary to attempt a khatm ”complete recitation” of the Quran as one of the Religious observances of Ramadan by reciting at least one juz’ per night in tarawih. Tarawih prayers are considered optional, not mandatory.