Abu Hamza Thumali, Thabit b. Dinar was one of the most important companions of Imam Sajjad (as) His sons Nuh, Mansur and Hamza were martyred along with Zayd b. Ali in Kufa. He has narrated many important narrations in Shi’ite traditions. The treatise of rights of Imam Sajjad (as) is also narrated from him. Dua Abu Hamza Thumali, which is recited in the Sahar time of the Holy nights of the month of Ramadan, is narrated from him and thus it is widely famous of his dua. Otherwise, the dua is from Imam Sajjad (as) and Abu Hamza is the narrator same as Dua Kumail.
Shaykh Kumail Rajani