Musannaf Ibn Abi Shaybah

Hazrat Hasan bin Muhammad narrates that the Holy Prophet ﷺ, when giving orders regarding the Magians of Hajar, wrote a letter stating that they should be invited to Islam, and whoever accepts Islam, his Islam should be accepted, and whoever does not accept Islam, jizya should be imposed upon him. However, their women should not be married, nor should their slaughtered animals be eaten.