The Messenger of Allah ﷺ said, "Whoever spends in the cause of Allah has it recorded for him at seven hundred times its value."
حدثنا أبو كريب حدثنا الحسين بن علي الجعفي عن زائدة عن الركين بن الربيع عن أبيه عن يسير بن عميلة
قال رسول الله ﷺ من أنفق نفقة في سبيل الله كتبت له بسبع مائة ضعف
[Its chain of transmission is sahih]. Ibn Abu Shayba (5/318) also narrated it from Husayn bin Ali Jafi with the same chain. Nasai (6/49, no. 3188) narrated it from the hadith of Rukayn, and Ibn Hibban (no. 1647), Hakim (2/87), Dhahabi, and others graded it sahih.There is also a narration on this subject from Abu Hurairah [coming at no. 3674].