Musannaf Ibn Abi Shayba 18:1037

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Sufyan narrated to us, from Layth, from Mujahid: "Corruption has appeared on land and sea because of what the hands of people have earned." He said: On land, it is the son of Adam who killed his brother. And on the sea, it is the one who used to seize every ship by force.