Bismillah Walhamdulillah Was Salaatu Was Salaam ‘ala Rasulillah

Narrated Aisha (Radi-Allahu ‘anha):

With the start of the last ten days of Ramadan, the Prophet (Sallallahu ‘Alaihi Wa Sallam) used to tighten his waist belt (i.e. work hard) and used to pray all the night, and used to keep his family awake for the prayers.

Bukhari Vol. 3 : No. 241