Sunan An-Nasa'i - سنن النسائي
22. The Book of Fasting - كتاب الصيام
9) Chapter: Completing thirty days Of Sha'ban if it is obscured (cloudy) and mentioning the differences reported by the narrators from Abu Hurairah
It was narrated that Abu Hurairah said:
"the Messenger of Allah said: 'Fast when you see it and stop fastingwhen you see it, and if it is obscured from you (too cloudy), then count it as thirty (days). "'
9) باب إِكْمَالِ شَعْبَانَ ثَلاَثِينَ إِذَا كَانَ غَيْمٌ وَذِكْرِ اخْتِلاَفِ النَّاقِلِينَ عَنْ أَبِي هُرَيْرَةَ
أَخْبَرَنَا مُؤَمَّلُ بْنُ هِشَامٍ، عَنْ إِسْمَاعِيلَ، عَنْ شُعْبَةَ، عَنْ مُحَمَّدِ بْنِ زِيَادٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم . " صُومُوا لِرُؤْيَتِهِ وَأَفْطِرُوا لِرُؤْيَتِهِ فَإِنْ غُمَّ عَلَيْكُمُ الشَّهْرُ فَعُدُّوا ثَلاَثِينَ "
