No document needed. But for safer side you can do one thing write a Memo saying " To Whomsoever it may Concern"
Content is " That your wife Name - Passport Number & your Daughter Name - Passport Number will be visiting Qatar and you will be sponsoring their Stay"
Then Copy of your ID both side and below that signature as appearing in ID.
And you can this letter by Whatsapp or mail them and tell them to make copy so as to show in Immigration in India as well as in Qatar if anybody insist.
No document needed. But for safer side you can do one thing write a Memo saying " To Whomsoever it may Concern"
Content is " That your wife Name - Passport Number & your Daughter Name - Passport Number will be visiting Qatar and you will be sponsoring their Stay"
Then Copy of your ID both side and below that signature as appearing in ID.
And you can this letter by Whatsapp or mail them and tell them to make copy so as to show in Immigration in India as well as in Qatar if anybody insist.