Qiran: Hajj and Umrah are joined under one ihram, which continues subject to its rites.
Tamattuʿ: The pilgrim performs Umrah, exits its ihram, then enters a separate ihram for Hajj.
Ifrad: The pilgrim enters ihram for Hajj alone. Al-Quduri explained the ordinary Hajj sequence earlier. This distinction determines the discussion of offerings and fasting.