alfan nasrullah, A. M. “The Existence of Islamic Legal Sources: A Contrastive Study on The Legality of Maslahah Mursalah from The Perspectives of Imam Al-Ghazali and Najm Ad-Din Thufi”. Islamic Studies Journal for Social Transformation, vol. 7, no. 2, Dec. 2023, pp. 124-3, https://e-journal.uingusdur.ac.id/isjoust/article/view/6880.