Is it Wajib to keep ties with someone who does not want to have connection with me? The Grand Ayatollah Sistani’s answer

The Grand Ayatollah Sistani answered questions about keeping ties with others.

Question: If someone does not want to talk to me, or continue to have ties with me; in that case is it still Wajib to keep ties or not? Can I leave that person to himself/herself?

The Grand Ayatollah Sistani: You do not cut, and it is enough whenever you see (them) say Salaam (greet them), and how are you; and if they get ill and need help, help them.