This is a ‘meccan’ surah. It is narrated from Imam Ja’far as-Sadiq (as) that the person who recites this surah in any of his prayers, will drink from the fountain of Kawthar. The reward for reciting this surah is compared to ten times the number of cattle slaughtered on Eid-ul-Adha every year until the Day of Resurrection. When the Holy Prophet\'s (saw) son, Tahir, born to Khadijah al Kubra, died, Amr bin As and Hakam bin Aas taunted the Holy Prophet (saw) by calling him “abtar” (tail-less), whose progeny has been cut off. This surah was revealed to give glad tidings to the Holy Prophet (saw) that abundance of unbounded grace, wisdom and knowledge, mercy and goodness, spiritual power and insight, in highest degrees, and of progeny has been given to him. It is mentioned in Sahih Bukhari, Sahih Muslim, Musnad of Ahmad ibn Hambal and other books of renowned Sunni scholars that the Holy Prophet (saw) said: “Kawthar is a stream of super excellence, exclusively belonging to me. Only the righteous believers (among my followers) will be allowed to drink from it. Ali shall distribute the water from it to them. On the day of judgement I will see some of my companions driven, like cattle, away from Kawthar. It will be announced that they are those who, after my departure from the world, deviated from the true religion and introduced innovations (based upon conjecture) to corrupt the faith.” From that day Imam Ali (as) was known and referred to by the companions as “saqi al kawthar”. “Kawthar” also means abundance of descendants. The countless descendants of the Imams of the Ahlulbayt (as), in the progeny of Imam Ali (as) and Syeda Fatimah (sa) are known as sayyids. They are the descendants of the Holy Prophet (saw).