It is narrated from Sayyiduna Anas (may Allah be pleased with him) that he said: I went to Ubaydullah bin Ziyad while they (he and his companions) were arguing back and forth about the Pool of al-Kawthar. He said: Anas (may Allah be pleased with him) has come to you. Then he asked: O Anas! What do you say about the Pool? I said: I never imagined I would live long enough to see people like you doubting and arguing about the Pool. I have left behind me old women, not one of whom prays a prayer without asking her Lord to bring her to the Pool of Muhammad (peace and blessings be upon him). This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.