The Ruling on Sleeping for the One Who is in a State of Wudu

Question
Does the one who sleeps and lies down nullify their wudu, and when does wudu not become nullified? And does the one who sleeps during prayer nullify their wudu?
Answer
I say, and with God's help: The wudu of one who sleeps during prayer is not invalidated; however, if someone sleeps outside of it without the proper sitting posture, which is to keep their sitting bones on the ground, then it is invalidated. And God knows best.
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