Is the prohibition against entering one's home at night when returning from travel due to dislike (makruh) or prohibition (haram)?

Question : Entering upon one's family, or the prohibition of entering upon one's family at night when they do not know of one's presence, is this a prohibition?

Answer : No, this falls under the category of proper conduct (adab); it is not a matter of dislike (makruh) or prohibition (haram), but rather a matter of proper conduct so that one does not catch his family in a state they would dislike. It is also incumbent upon the wife, if she learns of her husband's arrival, to prepare herself and adorn herself for him.