Handayani, S. . and Iqbal, M. N. . (2026) “The implementation of the sale and purchase agreement in the all-you-can-eat system: A study of consumer protection law no. 8 of 1999 and the perspective of the shafi’i school”, Journal of Law Science, 8(1), pp. 79-89. doi: 10.35335/jls.v8i1.6337.