عن ثوبان - رضي الله عنه- مولى رسول الله صلى الله عليه وسلم قَالَ: قَالَ رسولُ اللَّه -صَلّى اللهُ عَلَيْهِ وسَلَّم-: «َأفضل دينار ينُفِقُهُ الرجل: دينار ينفقه على عياله، ودينار ينفقه على دَابَّتِهِ في سبيل الله، ودينار ينفقه على أصحابه في سبيل الله».
[صحيح] - [رواه مسلم]
Thawbān (may Allah be pleased with him), the Messenger's freed slave, reported that the Messenger of Allah (may Allah's peace and blessings be upon him) said: "The most excellent dinar that a man spends is the dinar that he spends on his dependents, and the dinar that he spends on his riding-animal in the cause of Allah, and the dinar that he spends on his companions in the cause of Allah."
Sahih/Authentic. - [Muslim]
The money that a man spends which receives the greatest reward is the money he spends on his dependents (his children and household members that he is obligated to provides for), the money he spends on his riding animal that transports him in the way of Allah such as performing Jihad and other things, and the money that he spends on his companions in the various ways of obedience to Allah, the Almighty.