(8) باب قَبُولِ شَهَادَةِ الرَّجُلِ الْوَاحِدِ عَلَى هِلاَلِ شَهْرِ رَمَضَانَ وَذِكْرِ الاِخْتِلاَفِ فِيهِ عَلَى سُفْيَانَ فِي حَدِيثِ سِمَاكٍ
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."'
Reference: Sunan an-Nasa'i 2112
In-book reference: Book 22, Hadith 23
English translation: Vol. 3, Book 22, Hadith 2114