Does boycotting a person who commits sins mean not speaking to him and not greeting him with the salam?

The questioner:
He says: Honorable Shaykh, may Allah grant you success, does boycotting a person who commits sins, provided he is not an innovator, mean that he is a disbeliever?

The Shaykh:
Yes.

The questioner:
Does boycotting a person who commits sins, provided he is not an innovator, mean not speaking to him and not greeting him with the salam?

The Shaykh:
If speaking to him is of no benefit, if speaking and advising him are of no benefit, he is boycotted and not greeted with the salam until he repents to Allah the Exalted. The Prophet (peace and blessings be upon him) boycotted the three who were left behind, and they were among the Companions. He boycotted them, did not greet them with the salam, and did not return their salam, and he ordered the people to boycott them until they repented to Allah and Allah accepted their repentance.