According to another narration, one may repeat the invocation of blessings upon Muhammad and his Household one hundred times at least at Friday nights. Yet, the more the best.
Imam al-Sadiq(a.s.) is reported as saying, “To invoke Almighty Allah’s blessings upon Muhammad and his Household at Friday nights is equal to winning one thousand rewards, having one thousand evildoings erased, and having one thousand ranks raised.”
It is recommended to start these invocations immediately after the Asr Prayer on Thursday up to the end of Friday daytime. In this regard, it has been authentically narrated that Imam Ja’far al-Sadiq(a.s.) said, “On Thursday afternoons, angels from the heavens descend to the lowest space carrying golden pens and silver papers on which they record nothing except the invocations of blessings upon Muhammad and his Household."
Shaykh al-Tusi says it recommended, on Thursdays, to repeat the invocations of blessings upon Muhammad and his Household one thousand times in the following form:
