Re: Who adopted Islam first?
There is a good book on islam in Subcontinent i will put the title here a little later
but in time of uthman b affan , a expedition conquered makran and was led by a basran hakim b jabalah who is described as a sahabi in some sources and tabi in others.
The balochistan expedition was probably led by ahnaf b qays at the time of sayyidna umar