Musannaf Ibn Abi Shayba 33:155

Abdullah ibn Numayr narrated to us, he said: Zakariyya ibn Abi Za’idah narrated to us, from Muhammad ibn Abd al-Rahman ibn Sa’d ibn Zurarah, that the son of Ka’b ibn Malik narrated to him, from the Prophet (may Allah bless him and grant him peace), that he said: "Two hungry wolves sent into a flock of sheep are not more destructive to them than a person’s greed for wealth and status is to his religion."