24 — Ahmad ibn Manī‘ narrated to us: ‘Abd al-Wāhid ibn Wāsil, Abū ‘Ubayda al-Haddād, narrated to us: Sulaymān ibn al-Mughīra narrated to us, from Humayd ibn Hilāl, who said: ‘Abd Allah ibn ‘Amr said: “Leave alone that with which you have nothing to do. Do not speak about what does not concern you, and guard your tongue as you guard your silver coins.”