(13) باب ذِكْرِ الاِخْتِلاَفِ عَلَى مَنْصُورٍ فِي حَدِيثِ رِبْعِيٍّ فِيهِ
It was narrated that Ribi said;"the Messenger of Allah said:
"The Messenger of Allah said: 'When you see the crescent then fast, and when you see it, then stop fasting. If it is too cloudy then complete Shaban as thirty days, unless you see the crescent before that, then fast Ramadan as thirty days, unless you see the new crescent before that."'
Reference: Sunan an-Nasa'i 2128
In-book reference: Book 22, Hadith 39
English translation: Vol. 3, Book 22, Hadith 2130