After cutting one's nails one should take one's hands immediately because this taking is from the evil spirit, but after one has touched the covered places and has already finished his studies and recited the Shema earlier and lies down to sleep one should not take one's hands right now and can count on taking one's hands tomorrow.
Sources: See Mishnav 4, Lech ff., and it is necessary from a reference because regarding the taking of an evil spirit at dawn they warned in the Zohar not to delay it, but for the sake of purity of judgment only for the Torah and prayer only.
And it is true that if he is awake for a while, it is not appropriate to linger without taking it, lest he come to an obstacle, and what they said in 1888 is that he is not allowed to stand in the filthy entrances, etc., and this is the reason why the Shu'a used raids where it is necessary to take it, and that there is a punishment for those who did not take it, and he did not interpret precisely when he came to Hedia to study religion.
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