Sahih Bukhari

Narrated Anas:Zaid bin Thabit said, ""We took the ""Suhur"" (the meal taken before dawn while fasting is observed) with the Prophet (ﷺ) and then stood up for the (morning) prayer."" I asked him how long the interval between the two (Suhur and prayer) was. He replied, 'The interval between the two was just sufficient to recite fifty to sixty 'Ayat