Musannaf Ibn Abi Shayba 13:1179

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Sufyan narrated to us, from Habib ibn Abi Thabit, from Mujahid and Ibrahim. Ibrahim said: "Singing sprouts hypocrisy in the heart." He said: And Mujahid said: "[It is] 'And of the people is he who buys the amusement of speech' [referring to] singing."