Sayyiduna Abu Mas'ud (may Allah be pleased with him) said: the Prophet (peace and blessings be upon him) sent me to collect charity, then said: "Look, O Abu Mas'ud! Let me not find you on the Day of Resurrection coming with a camel from the charity camels on your back, groaning, which you had stolen." I said: "Then I will not go." He (peace and blessings be upon him) said: "Then I will not compel you."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14761