Musnad Abu Ya'la al-Mawsili 159:10

Abu Khaythama narrated to us, Sufyan ibn 'Uyaynah narrated to us, from Abu al-Zinad, from al-A'raj, from Abu Hurayrah, attributing it to the Prophet (may Allah bless him and grant him peace), who said: "The heart of the old man remains young regarding the love of two things: the love of life and the love of wealth."