Hadith 2121
´It was narrated from Abu Hurairah that the Messenger of allah sadi:` "When you see the crescent then fast, and when you crescent then fast, and when you see it, stop fasting. If it is obscured from you (too cloudy), then fast thirty days."
Hadith 2122
´'Abdullah bin 'Umar said:` " I heard the messenger of Allah say: 'When you see the crescent then fast, and when you see it, then stop fasting, and if it is obscured from you (too cloudy), then work it out (fro the beginning of the month, to complete thirty days)"'
Hadith 2123
´It was narrated from Ibn 'Umar that the Messenger of Allah mentioned Ramadan and said:` "Do not fast until you see the crescent, and do not stop fasting until you see it, and if it is obscured from you (too cloudy), then work it out."