2) Chapter: The obligation to fast Ramadan when the crescent is sighted, and to breal the fast when the crescent is sighted, and that if it is cloudy at the beginning or end of the month, then the month should be completed as thirty days.
Abdullah b. 'Umar (Allah be pleased with both of them) reported Allah's Messenger (ﷺ) as saying:
The mouth (of Ramadan) is thus and thus, and thus. i. e. ten, ten and-nine.
2) بَاب وُجُوبِ صَوْمِ رَمَضَانَ لِرُؤْيَةِ الْهِلَالِ وَالْفِطْرِ لِرُؤْيَةِ الْهِلَالِ وَأَنَّهُ إِذَا غُمَّ فِي أَوَّلِهِ أَوْ آخِرِهِ أُكْمِلَتْ عِدَّةُ الشَّهْرِ ثَلَاثِينَ يَوْمًا
وَحَدَّثَنَا سَهْلُ بْنُ عُثْمَانَ، حَدَّثَنَا زِيَادُ بْنُ عَبْدِ اللَّهِ الْبَكَّائِيُّ، عَنْ عَبْدِ الْمَلِكِ بْنِ عُمَيْرٍ، عَنْ مُوسَى بْنِ طَلْحَةَ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، - رضى الله عنهما - عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ . " الشَّهْرُ هَكَذَا وَهَكَذَا وَهَكَذَا عَشْرًا وَعَشْرًا وَتِسْعًا "
