´It was narrated that Abu Hurairah said:` "The Messenger of Allah said: 'Were it not that it would be too difficult for my Ummah, I would have delayed the 'Isha' prayer until one third or one half of the night had passed.'"
Hadith ReferenceSunan Ibn Majah / The Book of the Prayer / Hadith: 691
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح