"Allah's Messenger cursed three people: A man who leads people (in Salat) while they dislike him, a woman who spends a night while her husband is angry with her, and a man who hears: 'Hayya Alal Falah (come to success)' then does not respond."
Jami` at-Tirmidhi Book 2, Hadith 210
← Previous Hadith the Prophet said: "It is not allowed for a man to look into the interior of a man's house until he has been given permission, for if he looks, then he has entered. And one who leads people (in Salat) should not supplicate for himself alone with the exclusion of his congregation. If he does, then he has betrayed them. And one is not to stand for Salat while he has to urinate."

Jami` at-Tirmidhi Book 2, Hadith 209 Next Hadith → "It used to be said that the people with the worst punishment are two: A woman who disobeyed her husband, and a people's Imam whom they dislike."

Jami` at-Tirmidhi Book 2, Hadith 211