It was narrated that Ibn 'Abbas said; "A Bedouin came to the Prphet and said: 'I have sighted the crescent.' He said: 'Do you bear witness that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger?' He said: 'Yes.' So the Prophet gave the call saying: 'Fast."'

It was narrated that Ibn 'Abbas said; "A Bedouin came to the Prphet and said: 'I have sighted the crescent.' He said: 'Do you bear witness that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger?' He said: 'Yes.' So the Prophet gave the call saying: 'Fast."'

أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الْعَزِيزِ بْنِ أَبِي رِزْمَةَ، قَالَ أَنْبَأَنَا الْفَضْلُ بْنُ مُوسَى، عَنْ سُفْيَانَ، عَنْ سِمَاكٍ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ جَاءَ أَعْرَابِيٌّ إِلَى النَّبِيِّ صلى الله عليه وسلم فَقَالَ رَأَيْتُ الْهِلاَلَ ‏.‏ فَقَالَ ‏"‏ أَتَشْهَدُ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَأَنَّ مُحَمَّدًا عَبْدُهُ وَرَسُولُهُ ‏"‏ ‏.‏ قَالَ نَعَمْ ‏.‏ فَنَادَى النَّبِيُّ صلى الله عليه وسلم ‏"‏ أَنْ صُومُوا ‏"‏ ‏.‏