Man ʿarafa nafsahu fa-qad ʿarafa rabbahu, “whoever knows himself knows his Lord”, is a saying attributed to the Prophet or to ʿAlī, though not found in the canonical collections. Sufis from al-Ghazālī to Ibn ʿArabī meditated on it, often reading it as: knowing one’s nothingness, one knows God’s being.
Who knows himself knows his Lord
A saying, cherished by Sufis, that self-knowledge is the way to knowledge of God.
Also: man arafa nafsahu