Imām Al-Buwayṭī – Allāh have mercy on him – reports:

I heard Al-Shāfi’ī say, “A man does not become complete in this life except when he has four [qualities]: religiousness (al-diyānah), trustworthiness (al-amānah), safeguarding [from sin] (al-ṣiyānah) and sobriety (al-razānah).”

Al-Bayhaqī, Manāqib Al-Shāfi’ī 2:189.