English translation
2320. Nāfi' reported from Ibn 'Umar, who said: "Allāh's Messenger ﷺ said: 'The month consists of twenty-nine days. Do not fast until you see it (the crescent) and do not break the fast until you see it (the crescent). If it is cloudy, then complete thirty days.'" He said: "So when it was the twenty-ninth of Sha'bān, Ibn 'Umar would appoint somebody to sight the crescent for him. If it was sighted then so (he would fast). If it was not sighted, and there was no cloud or dust on the horizon, he would not fast the next morning. If it was not sighted due to clouds or dust, he would fast the next morning.” He said: “And Ibn ‘Umar would end his fasting along with the people, without counting this way. (Sahih)
