It 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,