Sayyiduna Anas (may Allah be pleased with him) said that a man from Banu Aslam came to the Prophet (peace and blessings be upon him) and said: I intend to go out for jihad, but I have no provisions. He (peace and blessings be upon him) said: "So-and-so prepared for jihad and then fell ill. Go to him and tell him: The Messenger of Allah (peace and blessings be upon him) sends you greetings of peace and orders you to give me the provisions with which I can prepare for jihad." The man went to him and told him (this message), and he said to his wife: Give him everything you prepared for me, and do not hold back anything, and Allah will bless you.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 17842