It was narrated from 'Uthman bin ‘Abdullah, i.e. Ibn Suraqah, that Umar bin al-Khattab رضي الله عنه said: I heard the Messenger of Allah ﷺ say: “Whoever shades the head of a fighter (mujahid), Allah will shade him on the Day of Resurrection; whoever equips a fighter until he has all that he needs, will have a reward equal to his until he dies (Yoonus said: or returns); whoever builds a mosque in which the Name of Allah may He be exalted, is remembered,Allah will build for him a house in Paradise.` ,