jab tum main say koi nend say jagay to pani kay bartain main hath dalnay say pehlay dho lay. kioke usay ilm nahi kay uskay hath nay rat kahan basar ki. aur jab tum main say koi shaks apni nend say baidar ho to teen dafa naak main pani charha ker jhar lay beshak shaitan naak ki jaroon main raat guzarta hai (sahih muslim and bukhari shareef)