Jayaprawira AR, . A. Analysis of the Implementation of the Islamic Contract Principle on Hajj Fund Management By Hajj Fund Management Agency (BPKH) . KSS [Internet]. 2019Oct.17 [cited 2024Apr.25];3(26):628–661. Available from: https://knepublishing.com/index.php/KnE-Social/article/view/5405