4. Are the hadith about Ghazwa-e-Hind (campaign towards India) valid?

This hadith does exist, but extremist Muslims have interpreted it incorrectly. There are several examples of such an incorrect interpretation. Literally, the term ghazwa refers to safar, or peaceful travel. According to a hadith:

A group of my ummah shall go for a campaign in Hind and it has been saved from Hell. (Sunan an-Nasa’i, hadith no. 3175)

This safar or ‘campaign’ can be of anything. It could even be of education or social welfare or for the purpose of spreading the peaceful message of Islam.