(6) باب إِذَا أُغْمِيَ الشَّهْرُ
Narrated Hudhayfah:
The Prophet (ﷺ) said: Do not fast (for Ramadan) before the coming of the month until you sight the moon or complete the number (of thirty days); then fast until you sight the moon or complete the number (of thirty days). (PT)
Reference (PT): Sunan Abi Dawud 2326 (PT)
In-book reference (PT): Book 14, Hadith 14 (PT)
English translation (PT): Book 13, Hadith 2319 (PT)