Good News Translation
Don't get into an argument over something that is none of your business. Don't take part in decisions that are being made by sinners.

New Revised Standard Version
Do not argue about a matter that does not concern you, and do not sit with sinners when they judge a case.

Contemporary English Version
If it's none of your business, then don't argue with them, and stay away from sinners when they discuss what to do.

New American Bible
Do not dispute about what is not your concern; in the quarrels of the arrogant do not take part.

Douay-Rheims Bible
Strive not in a matter which doth not concern thee, and sit not in judgment with sinners.

Strive not in a matter which doth not concern thee, and sit not in judgment with sinners.

Sirach 11:7
Before thou inquire, blame no man: and when thou hast inquired, reprove justly.

Sirach 11:8
Before thou hear, answer not a word: and interrupt not others in the midst of their discourse.

Sirach 11:10
My son, meddle not with many matters: and if thou be rich, thou shalt not be free from sin: for if thou pursue after thou shalt not overtake; and if thou run before thou shalt not escape.

Sirach 11:11
There is an ungodly man that laboureth, and maketh haste, and is in sorrow, and is so much the more in want.