Definition of "cadi"

[…] look at these Christians closely, and you will abhor them. They are the worshippers of gold, not the followers of Alla. The poorest Mussulman has more hospitality than their Cadi; more charity than their Imans; more honesty than their Viziers.

1819, Henry Tudor Farmer, Imagination; the Maniac's Dream: And Other Poems, page 157