It is narrated from Sayyiduna A'idh bin Amr al-Muzani (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Whoever is offered something of this provision without asking and without his soul craving it, let him use it to make his provision more ample; and whoever is wealthy, let him direct it to someone who needs it more than he does."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15121