Characteristics of Prayer

Bukhari :: Book 1 :: Volume 12 :: Hadith 821

Narrated 'Aisha:

Once Allah's Apostle delayed the 'Isha' prayer till 'Umar informed him that the women and children had slept. Then Allah's Apostle came out and said: "None from amongst the dwellers of earth have prayed this prayer except you." In those days none but the people of Medina prayed.