question #1 Sahih Muslim 647c, Book 5, Hadith 297 : What is the significance of delaying the night prayer according to Islamic teachings?

The Messenger of Allah (ﷺ) delayed the night prayer till a third of the night had passed and he did not approve of sleeping before it, and talking after it, and he used to recite in the morning prayer from one hundred to sixty verses (and completed the prayer at such hours) when we recognised the faces of one another.