Sahih al-Bukhari 6110

Narrated Abu Mas`ud:

A man came to the Prophet (ﷺ) and said “I keep away from the morning prayer only because such and
such person prolongs the prayer when he leads us in it. The narrator added: I had never seen Allah’s
Apostle more furious in giving advice than he was on that day. He said, “O people! There are some
among you who make others dislike good deeds) cause the others to have aversion (to congregational
prayers). Beware! Whoever among you leads the people in prayer should not prolong it, because
among them there are the sick, the old, and the needy.” (See Hadith No. 670, Vol 1)