Shahih
Bab Perkataan Nabi صلى الله عليه وسلم: 'Jika kalian melihat hilal, maka berpuasalah, dan jika kalian melihatnya, maka berbukalah'
Allah's Messenger (ﷺ) mentioned Ramadan and said, "Do not fast unless you see the crescent (of Ramadan), and do not give up fasting till you see the crescent (of Shawwal), but if the sky is overcast (if you cannot see it