(14) باب فِي شَهَادَةِ الْوَاحِدِ عَلَى رُؤْيَةِ هِلاَلِ رَمَضَانَ
Narrated Abdullah ibn Abbas:
A bedouin came to the Prophet (ﷺ) and said: I have sighted the moon. Al-Hasan added in his version: that is, of Ramadan. He asked: Do you testify that there is no god but Allah? He replied: Yes. He again asked: Do you testify that Muhammad is the Messenger of Allah? He replied: Yes. and he testified that he had sighted the moon. He said: Bilal, announce to the people that they must fast tomorrow. (PT)
Reference (PT): Sunan Abi Dawud 2340 (PT)
In-book reference (PT): Book 14, Hadith 28 (PT)
English translation (PT): Book 13, Hadith 2333 (PT)