Irfan Ullah, irfanullah, and saeedahmed saeed Ahmed. “Few Types of Trade and Their Circumstantial Considerations: خرید و فروخت کی چند صورتیں اور حالات و زمانہ کی رعایت”. ISLAMABAD ISLAMICUS, vol. 3, no. 2, Nov. 2020, pp. 40-64, https://islamabadislamicus.com/index.php/journal/article/view/23.