Key concepts in Sufism include:

1. Fana (Annihilation) – The spiritual state where a Sufi loses awareness of self and becomes absorbed in God, letting go of ego and desires.

2. Baqa (Subsistence) – Following Fana, this is the state of living in harmony with God, where the Sufi attains a lasting union with the Divine while remaining aware.

Other important concepts include Tawakkul (trust in God), Dhikr (remembrance of God), and Ihsan (spiritual excellence). Sufism emphasizes inner purification and a deep, loving connection with Allah.