سنن نسائی · Hadith 2124

It was narrated that ‘Abdur Rahman bin Zaid bin Al-Khattab addressed the people on the day concerning which there was doubt (as to whether the month had begun) and said: “I sat with the Companions of the Messenger of Allah صلی اللہ علیہ وآلہ وسلم and asked them, and they narrated that the Messenger of Allah صلی اللہ علیہ وآلہ وسلم said: ‘Fast when you see it and stop fasting when you see it, and perform the rites on that basis. If it is obscured, then complete thirty days, and if two witnesses testify then fast and stop fasting.” (Sahih)

Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020