Musnad Ahmad 33:550

Hassan narrated to us, Ibn Lahi'ah narrated to us, Abu al-Zubayr narrated to us, that he asked Jabir: "Did the Messenger of Allah, peace and blessings of Allah be upon him, say: 'If the son of Adam had a valley, he would wish for another'?" Jabir said: "I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: 'If the son of Adam had a valley of date palms, he would wish for one like it, then he would wish for one like it, until he wishes for valleys, and nothing fills the belly of the son of Adam except dust.'"