I heard it from Abu Huraira that he saw a person getting out of the mosque after the call to prayer had been announced. Upon this he remarked: This (man) disobeyed Abu'l-Qasim (ﷺ).
Sahih Muslim Book 5, Hadith 323
← Previous Hadith While we were sitting with Abu Huraira in a mosque a man went out of the mosque after the call to prayer had been announced. (A man stood up in the mosque and set off.) Abu Huraira's eyes followed him till he went out of the mosque. Upon this Abu Huraira said: This man has disobeyed Abu'l- Qasim (Muhammad) (ﷺ).

Sahih Muslim Book 5, Hadith 322 Next Hadith → 'Uthman b. 'Affan (narrated the mosque after evening prayer and sat alone. I also sat alone with him, so he said: 0, son of my brother, I heard the Messenger of Allah (ﷺ) say: He who observed the 'Isha' prayer in congregation, it was as if he prayed up to midnight, and he who prayed the morning prayer in congregation, it was as if he prayed the whole night.

Sahih Muslim Book 5, Hadith 324