It was narrated that Abu Hurairah said: “The Messenger of Allah (ﷺ) forbade anticipating the fast by fasting one day before sighting (of the crescent).”
SahihSahihDaifBook 7 · Hadith 9
سنن ابن ماجه
It was narrated that Abu Hurairah said: “The Messenger of Allah (ﷺ) forbade anticipating the fast by fasting one day before sighting (of the crescent).”