THEORY OF KHUDI AND SPIRITUAL DEVELOPMENT ON IQBAL’S PERSPECTIVE: Analysis Spiritual Strengthening Islamic Perspective. TAJDID: Jurnal Ilmu Ushuluddin, [S. l.], v. 22, n. 2, p. 271–297, 2023. DOI: 10.30631/tjd.v22i2.370. Disponível em: https://e-journal.lp2m.uinjambi.ac.id/ojp/index.php/tajdid/article/view/5384. Acesso em: 4 dec. 2025.