Younis, Dua'a, and Muthanna Mohammed. “Religious References in the Letters of Abu Al-Mutraf Ibn Umaira Selected Examples”. Journal of Education for the Humanities 5 (April 1, 2025): 1843–1866. Accessed September 8, 2025. https://ojs.uomosul.edu.iq/index.php/jeh/article/view/42949.