Question: What was a branch of the Khalwatiyya order of Islamic mysticism founded by Sayyid Hasan Husameddin, with relations to the cousin and son-in-law of Muhammad?
Sentence (from "Thangal"): They migrated to Kerala during the 17th century to expand their business, and propagated Islam as they are Muslims, and do not belong to the Mappila Muslim community of Kerala.
Relevant evidence: No