In 615 CE during the Muslims second migration to Abyssinia they found safety at Aksum who's king asked them to explain their religion and he was impressed and offered the Muslims full protection.
This time, in 6 BH (615 CE) almost one hundred Muslims made a second migration back to Ethiopia where they stayed protected. After the Muslims in Arabia had migrated to Medina in AH 7 (628/629) and attained security, the Muslims in Ethiopia migrated back to Arabia and reunited with them in Medina after six years absence. The Meccan polytheists did not appreciate that the Muslim had found a refuge, so they equipped 'Amr ibn al-'As and 'Abdullah bin Abi Rabi'a with valuable gifts and sent them to the court of Aksum. They became successful in winning some of the courtiers over to their side and argued that the King should expel the Muslims back to Mecca and made over to them, on the grounds that they had apostated and preached a religion alien to both the Meccan religion and Christianity, the official Aksumite religion. The king of Aksum, Ashama ibn Abjar in the Muslim tradition (Ella Seham and variants in the Ethiopian), summoned the Muslims to the court and asked them to explain the teachings of their religion. The Muslim emigrants had decided to tell the whole truth whatever the consequences were. The story moved to tears the bishops and king who exclaimed: "It seems as if these words and those which were revealed to Jesus are the rays of the light which have radiated from the same source." Turning to the crest-fallen envoys of Quraish, he said, "I am afraid, I cannot give you back these refugees. They are free to live and worship in my realm as they please. 
