Language:
كتاب الصيام
7  
Fasting
(7)
Chapter: What was narrated concerning: “Fast when you see it (the new crescent) and stop fasting when you see it”
(7)
باب مَا جَاءَ فِي صُومُوا لِرُؤْيَتِهِ وَأَفْطِرُوا لِرُؤْيَتِهِ
Sunan Ibn Majah 1654
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.
حَدَّثَنَا أَبُو مَرْوَانَ، مُحَمَّدُ بْنُ عُثْمَانَ الْعُثْمَانِيُّ حَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ، عَنِ الزُّهْرِيِّ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عُمَرَ، قَالَ: قَالَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ ‏ "‏ إِذَا رَأَيْتُمُ الْهِلاَلَ فَصُومُوا وَإِذَا رَأَيْتُمُوهُ فَأَفْطِرُوا ‏.‏ فَإِنْ غُمَّ عَلَيْكُمْ فَاقْدُرُوا لَهُ ‏"‏ ‏.‏ وَكَانَ ابْنُ عُمَرَ يَصُومُ قَبْلَ الْهِلاَلِ بِيَوْمٍ ‏.‏
Grade: Sahih (Darussalam)
Reference : Sunan Ibn Majah 1654
In-book reference : Book 7, Hadith 17
English translation : Vol. 1, Book 7, Hadith 1654