Is delaying the voluntary prayer until the middle or end of the night disliked?

Primary text

Praying voluntary prayers until the middle of the night or until the end of the night is not disliked, according to one narration. The dispute centers only on returning (to prayer) before sleeping. The correct position is that it is not disliked because it is an act of goodness and obedience, and thus is not disliked, similar to delaying it until the end of the night.