Sahih Al Bukhari (560)

عن ابن عباس رضي الله عنهما قال {نمت عند ميمونة والنبي صلى الله عليه وسلم عندها تلك الليلة فتوضأ ثم قام يصلي فقمت على يساره فأخذني فجعلني عن يمينه فصلى ثلاث عشرة ركعة ثم نام حتى نفخ وكان إذا نام نفخ ثم أتاه المؤذن فخرج فصلى ولم يتوضأ}

Ibn `Abbas (may Allah be pleased with him) narrated: Once I passed the night in the house of my aunt Maymunah. The Prophet (peace be upon him) stood for the night prayer and I joined him and stood on his left side but he drew me to his right by holding me by the head. He offered thirteen Rak`ah then slept until his voice was heard then the muezzin came to alert him for Salah, and he went out to Salah without making ablution.