Hadith 4:662
Waki’ narrated to us, from Sufyan, from Abu Ishaq, from Sa’id ibn Jubayr, from Ibn ‘Umar, who said regarding Ramadan: "Do not fast until you see the crescent, and do not break your fast until you see it. If it is obscured from you, then estimate it."
حدثنا وكيع عن سفيان عن أبي إسحاق عن سعيد بن جبير عن بن عمر قال في رمضان