Hakeem bin Hizam reported,

Hakeem said, "I asked the Messenger of Allah ﷺ and he gave to me. Then I asked him again and he gave to me. Then I asked him a third time and he gave to me. Then he said, 'Hakeem, this wealth is sweet and lush. Whoever takes it with a generous heart will be blessed in it, but whoever takes it with a greedy heart will not be blessed in it, like one who eats and is never satisfied. The upper hand is better than the lower hand.'"Hakeem said, "I replied, 'Messenger of Allah, by the One who sent you with the truth, I will never accept anything from anyone after you until I leave this world.'"Abu Bakr would call Hakeem to grant him his stipend, but he refused to accept it from him. Then Umar called him to give it to him, and he refused to accept anything from him. So Umar said, "Company of Muslims, I call you to witness regarding Hakeem that I am offering him his rightful share of this spoils, and he refuses to take it."So Hakeem did not take anything from anyone after the Messenger of Allah ﷺ until he died.

عن حكيم بن حزام، قال

سألت رسول الله ﷺ فأعطاني، ثم سألته فأعطاني، ثم سألته فأعطاني، ثم قال: يا حكيم إن هذا المال خضرة حلوة، فمن أخذه بسخاوة نفس بورك له فيه، ومن أخذه بإشراف نفس لم يبارك له فيه، كالذي يأكل ولا يشبع، اليد العليا خير من اليد السفلى. قال حكيم: فقلت: يا رسول الله، والذي بعثك بالحق لا أرزة أحدا بعدك شيئا حتى أفارق الدنيا. فكان أبو بكر يدعو حكيما إلى العطاء فيأبى أن يقبله منه، ثم إن عمر دعاه ليعطيه فأبى أن يقبل منه شيئا، فقال عمر: إني أشهدكم يا معشر المسلمين على حكيم أني أعرض عليه حقه من هذا الفيء فيأبى أن يأخذه، فلم يرزأ حكيم أحدا من الناس بعد رسول الله ﷺ حتى توفي.