Abu Wa'il said: Sayyiduna Mu'awiyah (may Allah be pleased with him) visited his maternal uncle Abu Hashim bin Utbah bin Rabi'ah (may Allah be pleased with him), who was ill and weeping, and he said: O uncle! What makes you weep? Is it some pain that is distressing you? Or is it greed for the world? He said: Neither this nor that; rather, the Messenger of Allah (peace and blessings be upon him) gave me a counsel which I did not act upon. He (peace and blessings be upon him) said: "O Abu Hashim! You will see wealth that will be given to people, and of the whole world only a servant and a mount in the path of Allah suffice you." And today I see that I have gathered wealth (contrary to it).
Hadith Referenceالمعجم الكبير للطبراني / باب الشين / 7169