The hagiographical life of the 6th century East Syriac Catholicos Mar Aba continues.
32. At the time of the journey, when the King of Kings set out to go to Azerbaijan, the saint was led with him in his fetters, in great discomfort, over mountains and hills, in heat and drought, in thirst and hunger, in much prayer with his disciples. Wherever they came, the believers welcomed him with great joy and everyone went to his tent as a means of grace and blessing. Wherever the king camped, believers came from place and asked that the Saint should be released from these harsh restraints. When the King of Kings came to Azerbaijan and the magians of the place where the Blessed One had been in custody, hearing that he was at court, all came to honour and greet him, weeping that by the removal of the Noble One they had been robbed of such a blessing. Everywhere they went, wherever the great ones of the Kingdom were, they spoke of his wisdom and manner of life. The leaders of the magians at court forbade them to say such things about him, until, of the leaders of the magians, Kardag the Ainbed, and Shahrdawer, and Azadsad the Mobedan Mobed, calmed down in their anger against him, because they became ashamed of themselves through the beautiful things which people said about him. So they told him through a Mobed, “We hear from many people that you are a good and an upright man, and we are anxious that you should be released from your bonds. Just state publically that you are not opposed to magianism and will not convert (anyone) else to Christianity, and we will immediately release you and you can go wherever you like.”
All this seems rather fictional to me.