أمير المؤمنين
The Khalīfatul Masīh (; ; ), sometimes simply referred to as "Khalifah" (i.e. Caliph, successor), is the elected spiritual and organizational leader of the worldwide Ahmadiyya Muslim Community and is the successor of Mirza Ghulam Ahmad, who had taken the titles of Mahdi and Messiah of Islam. The Caliph is believed to be divinely guided and is also referred to by members of the Ahmadiyya Muslim Community as Amir al-Mu'minin (Leader of the Faithful). The fifth and current Khalifatul Masih is Mirza Masroor Ahmad.