Asrori, Sulaeman Jajuli, and Budi Sudrajat. “The Effect of Contribution Income and Claim Expense on Underwriting Surplus Deficit With Investment Results As a Moderating Variable in Sharia Life Insurance Companies Registered With the OJK for the 2018-2022 Period”. Al-Kharaj: Journal of Islamic Economic and Business 8, no. 2 (May 21, 2026). Accessed May 22, 2026. https://ejournal.iainpalopo.ac.id/index.php/alkharaj/article/view/10148.