Musnad Ahmad 289:12

Muhammad ibn Ja‘far narrated to us, he said: Shu‘bah narrated to us, from Ya‘la ibn ‘Ata’, from Waki‘ ibn ‘Udas, from Abu Razin, his paternal uncle, who said: I said: "O Messenger of Allah, how does Allah bring the dead to life?" He said: "Have you not passed by a valley that was barren, then you passed by it while it was green?" — Shu‘bah said: He said it more than twice — "Likewise does Allah bring the dead to life."