ANSWER:

You have done your job by advising him.

If he persists in his corrupt beliefs and aqeedah, you should keep distance from him as he is bad news and not a good person to be friends with. 

My friend was telling me that we can go to dargah and when I refused he asked me for reference in Quran and hadeeth that says we should not go to dargah. When I showed him your videos of dargah from YouTube he said you may be unauthentic as many Maulanas and sheikhs are unauthentic. I said him my relative know Quran and hadeeths well and they said to listen to you than too he was not listening.