Nadvī, A. A. �. A. ([1968]). Al- Arkān al-arbaʻa : (aṣ-ṣalāt, az-zakāt, aṣ-ṣaum, al-ḥajj) fī ḍawʼ al-Kitāb wa-ʼs-sunna muqāranatan maʻa al-diyānāt al-ukhrá. Dār al-Fatḥ.