79 — Abu al-Abbās Abd Allah ibn al-Saqr al-Sukkarī narrated to us: Muhammad ⦗394⦘ ibn al-Musaffā narrated to us: al-Walīd ibn Muslim narrated to us: al-Walīd ibn Sulaymān ibn Abī al-Sāʾib narrated to us, from Alī ibn Yazīd, from al-Qāsim, from Abū Umāma, from the Prophet (may Allah bless him and grant him peace), who said: “There will be tribulations during which a man will be a believer in the morning and a disbeliever by evening—except one whom Allah keeps alive through knowledge.”