Musnad Ahmad 803:3

Dawud ibn ‘Amr narrated to us, Nafi‘ ibn ‘Umar al-Jumahi narrated to us, from al-Qasim ibn Abi Bazzah, regarding the saying of the Blessed and Exalted, {And do not confer favor to acquire more} [Al-Muddaththir: 6], he said: "Do not give something while seeking more than it."