Al Walid, Khalid, and Nurul Ain Norman. “Happiness and Suffering in the Perspective of Sufism (Tasawuf)”. Syifa al-Qulub : Jurnal Studi Psikoterapi Sufistik 7, no. 1 (July 27, 2022): 1–10. Accessed October 7, 2026. http://journal.uinsgd.ac.id/index.php/syifa-al-qulub/article/view/23763.