Volume 9, Book 90, Number 345:
Narrated ‘Ata:
One night the Prophet delayed the Isha’ prayer whereupon ‘Umar went to him and said, “The
prayer, O Allah’s Apostle! The women and children had slept.” The Prophet came out with water
dropping from his head, and said, “Were I not afraid that it would be hard for my followers (or for
the people), I would order them to pray Isha prayer at this time.” (Various versions of this Hadith are
given by the narrators with slight differences in expression but not in content).