حَدَّثَنَا أَبُو مَرْوَانَ الْعُثْمَانِيُّ حَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ عَنْ الزُّهْرِيِّ عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ عَنْ أَبِي هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا رَأَيْتُمْ الْهِلَالَ فَصُومُوا وَإِذَا رَأَيْتُمُوهُ فَأَفْطِرُوا فَإِنْ غُمَّ عَلَيْکُمْ فَصُومُوا ثَلَاثِينَ يَوْمًا
ابن ماجہ · Hadith 1655
It was narrated from Abu Hurairah that the Messenger of Allah P.B.U.H 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." (Sahih)
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020