Everyone among you is constantly in prayer so long as the prayer detains him (for this noble objective) and nothing prevents him to return to his family but the prayer.
Sahih Muslim Book 5, Hadith 343
← Previous Hadith The servant is constantly in prayer so long as he is in a place of worship waiting for the prayer (to be observed in congregation), and the angels invoke (blessings upon him in these words): O Allah! pardon him. O Allah! show mercy to him, (and they continue to do so) till he returns (from the mosque having completed the prayer) or his ablution breaks. I said: How is the ablution broken? He said: By breaking of the wind noiselessly or with noise.

Sahih Muslim Book 5, Hadith 342 Next Hadith → The Messenger of Allah (ﷺ) said: Anyone amongst you who sat in a place of worship waiting for the prayer is in prayer and his ablution is not broken, the angels invoke blessing upon him (in these words): O Allah! pardon him. O Allah! have mercy upon him.

Sahih Muslim Book 5, Hadith 344