According to the truth he likes. For example, I like eating meat, so don't tell me that eating meat is not good, and meat is not delicious. Just say, you fat bastard, didn't you say you wanted to lose weight? Aren't you afraid of gaining weight again?
As a disciple of Buddha, we should resist killing karma. However, there are great differences between people. People don't believe in Buddhism and want to make money before opening a restaurant. If you say that opening a restaurant is a crime, killing people will go to hell. It's not right to make money. Give it to the poor. How to promote Buddhism?
So convince each other with convincing reasons. Of course, the premise is to be yourself. (I'm ashamed to say)
Resolutely stop, unless you are very capable or have some special circumstances. Otherwise, let him go.
In fact, it is very meritorious to preach Buddhism and persuade others to give alms, but the Diamond Sutra says: Bodhisattva should walk among us like this, and don't live together. Similarly, we should not be obsessed with persuading others, but speak calmly and in good faith.
If the other party is still unconvinced. Then either I am insincere and have no wisdom to do it well. Or it can only be said that what he did was retribution, Buddha still didn't want people, and my own problems haven't been solved, so don't force others.