أمير المؤمنين
In 1220-, the Abbasid Caliph Al-Nasir sent his Indian-born ambassador Radi al-Din Abu'l-Fada'il al-Hasan bin Muhammad al-Saghani to Delhi. The ambassador returned to the Abbasid capital Baghdad in 1227, during the reign of Al-Mustansir. In 1228, the new Caliph sent the ambassador back to Delhi with robes of honour, recognizing Iltutmish's authority in India and conferring on him the titles "Yamin Khalifat Allah" ("Right Hand of the God's Deputy") and "Nasir Amir al-Mu'minin" ("Auxiliary of the Commander of the Faithful"). On 18 February 1229, the embassy arrived in Delhi with a deed of investiture.