4. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from Hafs ibn al-Bakhtari and Hisham ibn Salim and people other than the two from Abu ‘Abdillah who has said the following:“About the words of Allah, the Majestic, the Glorious, ‘It is He who has sent serenity (al-Sakinah) into the hearts of the believers,’ (48:4) the Imam said, ‘It (serenity) is belief.’”