question #3 Sahih Muslim 649h, Book 5, Hadith 341 : What is the significance of remaining in a place of worship after prayer according to Islamic teachings?

The angels invoke blessings on everyone among you so long as he is in a place of worship with these words: O Allah! pardon him, O Allah, have mercy upon him, (and they continue to do so) as long as, he ablution (of the worshipper) is not broken, and one among you is in prayer and so long as he is detained for the prayer.