Musnad Ahmad 32:1684

'Affan and Bahz narrated to us, they said: Hammam narrated to us, Qatadah narrated to us, Anas narrated to us. Bahz said in his narration: He said: Qatadah informed us, from Anas, that the Prophet, peace and blessings of Allah be upon him, said: "There is no one among the people of Paradise who would be pleased to return—and Bahz said: to return—to the world, even if he were to have ten times its equivalent, except for the martyr. For he would wish to return—Bahz said: to return to the world—so that he could be martyred again, because of what he sees of the merit."