´It was narrated from Ibn ‘Umar that the Messenger of Allah (ﷺ) said:` ‘When you see the new crescent, fast, and when you see it, stop fasting. If it is cloudy then calculate it (as thirty days).” Ibn ‘Umar used to fast one day before the new crescent was seen.
Hadith Referenceسنن ابن ماجه / كتاب الصيام / 1654
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:بخاري ومسلم
´It was narrated from Abu Hurairah that the Messenger of Allah (ﷺ) said:` “When you see the new crescent then fast, and when you see it then stop fasting. If it is cloudy then fast thirty days.”
Hadith Referenceسنن ابن ماجه / كتاب الصيام / 1655
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم