00000na 22 1 450925713Keywords Nation Unity Social equalization Madīna al-Nabī Madīna al-Waṣī Investigating the Process of Implementing the Teaching of Islamic Nation (Umma) in Madīna al-Nabī and Madīna al-WaṣīAsghar Montazerolghaem; Zahra Sadat KeshavarzarticleEnglish