This is baseless.

I have heard if someone give dawah to a non muslim women then she accept islam and if he marry her he will go jannah. Not only him but also 7 generations from past and future of his family. Is it true. What are the rewrds fot that.

Inviting others to Islam | October 7, 2015 3:03 am
Previous

The other day i was discussing about Islam with one of a non-believing friend of mine (a hindu to be precise), he inquired so i warned him about the judgement day and the hell and the hereafter. And all of a sudden he asked me that why i am born into a hindu family while you are born into a muslim family, and if Allah wanted me to follow Islam he would have given me birth into a muslim family. why only you (he meant me) are born into a muslim family why not me ? i didnt have any proper answer for his questions so i told him to wait for a while so that i can get the answers. if you give the answers of these questions that’ll be really helpful.
Next

Is there any benefit in trying to give dawah to kuffar who are just trying to prove you wrong on every point in terms of Islam, because it seems to me that Dawah can only be really given to people who want to know the truth!