ANSWER:

As long as he made wudhu and then went to bed, it doesn’t matter if he breaks his wudhu after that. 

Sheikh there is a sunnah to do wudhu before you sleep,but if a person go to washroom or pass air before sleeping so in that case should one do wudhu everytime till He sleeps or his first wudhu with niyah is enough.

Etiquette, Morals and Heart-Softeners |