For applying Visa for wife & child, the husband to be a holder of vallid RP + 6 month bank statement showing salary transfer min 6000QR + no objection letter from sponsor bearing salary & contract duration + marriage certificate attestation to be made by Pakistan Foreign ministry and by PAK Embassy at qatar and Forein Ministry at Qatar (this chained attestation is compulsory). OR, if you are looking for Qatar Airways visa (under blooded relation base) yours (or) your wife's passport (any one) should posess its spouse name clearly which can be proofed legally as husband and wife to Qatar Airways official's satisfaction.