Chapter: The fasting is valid for the one who is Junub when dawn comes
A'isha, the wife of the Messenger of Allah ( صلی اللہ علیہ وسلم ), said: The dawn broke upon the Messenger of Allah ( صلی اللہ علیہ وسلم ) during the Ramadan in a state of junub not because of sexual dream (but on account of intercourse) and he washed himself and observed fast.
Authentic