Musannaf Ibn Abi Shayba 37:638

Waki’ narrated to us, from al-Nahhas ibn Qahm, from Shaddad Abu ‘Ammar, who said: ‘Awf ibn Malik said: "O plague, take me to you." They said: "Did you not hear the Messenger of Allah (peace and blessings of Allah be upon him) say: 'The longer a Muslim lives, the better it is for him'?" He said: "Yes, but I fear six things: the leadership of the foolish, the selling of judgment, the shedding of blood, the severing of kinship ties, the abundance of police, and a generation that will grow up taking the Qur’an as musical instruments."