"We would not have lunch during the time of Allah's Messenger, nor would we have a siesta, until after the Friday prayer."
Jami` at-Tirmidhi Book 4, Hadith 38
← Previous Hadith the Prophet said: "Whoever catches a Rak'ah of the Salat then he has caught the Salat."

Jami` at-Tirmidhi Book 4, Hadith 37 Next Hadith → the Prophet said: "When one of you becomes sleepy during the Friday prayer, then let him move from where he is sitting."

Jami` at-Tirmidhi Book 4, Hadith 39