Sahih Al Bukhari Hadith Number 864

Narrated `Aisha: Once Allah’s Messenger (peace be upon him) delayed the `Isha’ prayer till `Umar informed him that the women and children had slept. The Prophet (peace be upon him) came out and said, “None except you from amongst the dwellers of earth is waiting for this prayer.” In those days, there was no prayer except in Medina and they used to pray the `Isha’ prayer between the disappearance of the twilight and the first third of the night.

10  Call to Prayers (Adhaan)
Hadith number 864
Volume no 1
Chapter: 162 (Going of women to the mosqu at night and in darkness)