The Determinant of Sleep That Invalidates Ablution, and Does the Intention to Sleep Invalidate Ablution?

Question:
May Allah reward you. Finally, this questioner says: Honorable Shaykh, if I doze off or feel sleepy during the prayer, I intend to lie down after the taslim of the prayer, but then I do not sleep or do not lie down. Does the mere intention invalidate the wudu, O Shaykh?

Answer:
No, the wudu is not invalidated except by deep sleep. Deep sleep is the sleep of one who is lying on his side, or leaning on something that, if removed, would cause the person to fall. This is the sleep that invalidates the wudu. As for the sleep of one who is sitting securely and in control of himself, this does not invalidate the wudu; it is what is called dozing. This intention to sleep has no effect; the mere intention has no effect, because he did not sleep at all. Yes.