Part 2 - Abandoning friends and associates who are evil-doers

Following that is the instruction to abandon evil friends:

Evil-doer companions should also be abandoned.
The more we are their companions, the more their evil spreads.
Goodness is obscured, and kleshas fall like rain.
The upper realms are blocked and the lower cultivated.
Holy ones are reviled with hatred for white Dharma.
Evil is praised and there is reliance on black Dharma.
They praise those who are equal to them in the fortune of evil.
They always lead on perverted paths to the lower realms.
Those who have good judgment should keep them far away.

To the extent one deals with such people, evil deeds increase, and evil-doers are supported and praised. Since these people have left virtue far behind, they will fall into the lower realms, and so they must be abandoned. The Jewel Heap Sutra says:

What are evil companions? They are those who decrease virtue and are joined to non- virtue. Do not associate with them. Do not attend on them. Do not even see them.

Also it says there:

The shravakas are those who benefit themselves.
In benefiting themselves they abandon others’ benefit.
Attending them leads to materialistic accumulations.
These will never produce the accumulations of Dharma.
Those are bad spiritual friends and their students bad companions.
Therefore abandon them and keep them far away.