It was narrated that Ibn Abbas said: "The Messenger of Allah said; 'Fast when you see it and stop fasting when you see it, and if it is obscured from you (too cloudy), then complete thirty (days)."'

It was narrated that Ibn Abbas said: "The Messenger of Allah said; 'Fast when you see it and stop fasting when you see it, and if it is obscured from you (too cloudy), then complete thirty (days)."'

أَخْبَرَنَا أَحْمَدُ بْنُ عُثْمَانَ أَبُو الْجَوْزَاءِ، - وَهُوَ ثِقَةٌ بَصْرِيٌّ أَخُو أَبِي الْعَالِيَةِ - قَالَ أَنْبَأَنَا حَبَّانُ بْنُ هِلاَلٍ، قَالَ حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ عَمْرِو بْنِ دِينَارٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ صُومُوا لِرُؤْيَتِهِ وَأَفْطِرُوا لِرُؤْيَتِهِ فَإِنْ غُمَّ عَلَيْكُمْ فَأَكْمِلُوا الْعِدَّةَ ثَلاَثِينَ ‏"‏ ‏.‏