Sunan Abi Dawud Book 15, Hadith 34
Abu Sa’id Al Khudri said “The Apostle of Allaah(ﷺ) sent an expedition towards Banu Lihyan and said “One of the two persons should go forth. He then said to those who sat (at home), If any one of you looks after the family and property of a warrior, he will receive half the reward of the one who goes forth (in jihad).”
Zaid bin Khalid al Juhani reported that Apostle of Allaah(ﷺ) as saying “He who equips a fighter in Allaah’s path has taken part in the fighting. And he looks after a fighter’s family when he is away has taken part in the fighting.”
I heard the Messenger of Allah (ﷺ) say: What is evil in a man are alarming niggardliness and unrestrained cowardice.