Ziyad bin 'Alaqa زياد بن علاقة · The Book of Leading the Prayer (Al-Imamah)

"The Messenger of Allah (ﷺ) entered upon us and the only people present were myself, my mother, the orphan and Umm Harh, my maternal aunt. He said: 'Stand up and I will lead you in prayer.' It was not the time for a (prescribed) prayer. And he led us in prayer."

"Prayer in congregation is twenty-five levels better than a prayer offered on one's own."