Kuraib says: Sayyida Umm Fadl (may Allah be pleased with her) sent me to Sayyiduna Muawiyah (may Allah be pleased with him) in Syria. While I was there, the new moon of Ramadan was sighted. We saw the moon on the night of Friday. I returned to Madinah at the end of that month. Sayyiduna Abdullah ibn Abbas (may Allah be pleased with him) asked me about some matters, and then the topic of the moon came up. He asked me: When did you see the moon? I said: We saw it on the night of Friday. He asked: Did you see it yourself? I said: Yes, and the people also saw it, and then everyone and Sayyiduna Muawiyah (may Allah be pleased with him) fasted. Upon hearing this, he said: But we saw it on Saturday evening, so we will continue to fast until we complete thirty days or see the moon. I said: Will you not consider the sighting and fasting of Sayyiduna Muawiyah (may Allah be pleased with him) as valid? He said: That is not the case; in fact, the Messenger of Allah (peace and blessings be upon him) commanded us to do it this way.