Ḥaqīqat-i dīn : mushtamil bar Ḥaqīqat-i shirk, Ḥaqīqat-i tauhīd, Ḥaqīqat-i taqvā, aur Ḥaqīqat-i namāz - Iṣlāḥī, Amīn Aḥsan (Maktabah-yi Markazī Anjuman-i Ḵẖuddāmulqurʼān, 1980)