The meaning of “do not bear witness to falsehood”

Allah (Glorified be He) says:

And when you (Muhammad صلى الله عليه وسلم) see those who engage in a false conversation about Our Verses (of the Qur’ân) by mocking at them, stay away from them till they turn to another topic. And if Shaitân (Satan) causes you to forget, then after the remembrance sit not you in the company of those people who are the Zâlimûn (polytheists and wrong-doers).

He (Exalted be He) also says in Surah Al-Nisa’ :

And it has already been revealed to you in the Book (this Qur’ân) that when you hear the Verses of Allâh being denied and mocked at, then sit not with them, until they engage in a talk other than that; (but if you stayed with them) certainly in that case you would be like them. .

And:

And those who do not bear witness to falsehood, and if they pass by some evil play or evil talk, they pass by it with dignity.

The meaning of “do not bear witness to falsehood” implies not attending it.

Zur (falsehood) covers all kinds of abominations, including polytheism, disbelief, the festivities of polytheists, congregations for drinking wine and smoking, listening to songs and musical instruments, watching movies and such abominations.

Source:

http://www.alifta.net/Fatawa/FatawaSubjects.aspx?languagename=en&View=Page&HajjEntryID=0&HajjEntryName&RamadanEntryID=0&RamadanEntryName&NodeID=3578&PageID=5283&SectionID=14&SubjectPageTitlesID=28252&MarkIndex=3&0#AMuslimmustbecertainwhenjudgingpeopleandbecarefulnottoslandertheirfellowMuslims