The ostensible reason was that King Yusuf had adopted Judaism and was persecuting the Christian Arabs.

Tha'labah was a notable tribe of Jews in Medina, but it is not entirely clear if the tribesmen were not actually Arabs who adopted Judaism.

Some had adopted Judaism, and in the coastal plains many had accepted Christianity under the Romans.

The Khazar (a Turkic semi-nomadic people from Central Asia) King and members of the upper class adopt Judaism.

But know that this will not be the case if you adopt Judaism or the law of Mohammed.

The population there insisted that in order to settle the Banu Awf must adopt Judaism.

Letters exist in Syriac that record the persecution of believers by the king of Yemen in the 6th century, when the latter had adopted Judaism.

I don't take no chances, boy . . . It is true, I am an American Negro who adopted Judaism as a faith.

Glaphyra became a Jew upon her marriage and she did adopt Judaism even though no mention of conversion was made in the account of her first marriage.

If the slave of a Jew or Moor adopted Judaism or Mohammedanism, he had to be set free and was required to leave the island.