408
Musnad AhmedIt was narrated from "Uthman bin "Affan (رضي الله عنه) . "Abdur-Razzaq said: from the Prophet (ﷺ) - that he said:
"Whoever prays "Isha" and Fajr prayer in congregation, it is as if he spent the night in prayer (qiyamul-lail).” ‘Abdur-Rahman said: Whoever prays "Isha" in congregation, it is as if he spent half the night in prayer, and whoever prays Fajr in congregation, it is as if he spent the entire night in prayer,
Reference: Musnad Ahmad 408
Arabic/English book : Book 4, Hadith 408
Arabic/English book : Book 4, Hadith 408