Ghafoor Hasan, Q. . “The Fifth Epistle of Sheikh Muhammad Othman Siraj Al-Din Al-Naqshbandi - May God Have Mercy on Him -- Doctrinal Analytical Study”. Zanco Journal of Human Sciences, vol. 27, no. 5, Oct. 2023, pp. 206-17, doi:10.21271/zjhs.27.5.12.