A young man from the Aslam tribe said: "O Messenger of Allah! I would very much like to fight in the way of Allah but I do not have anything with which to equip myself for fighting." The Messenger of Allah (ﷺ) said, "Go to so-and-so, for he had equipped himself (for fighting) but he fell ill." So, he (the young man) went to him and said: "The Messenger of Allah (ﷺ) sends you his greetings and says that you should hand over to me the equipment that you have procured." The man said to his wife: "Give him the equipment which I have collected for myself and do not withhold anything from him. By Allah! Allah won't bless something you withheld (in this respect)."

[Muslim].