Al-An'am (The Cattle)
Surah 6 · Verse 108
And do not abuse those whom they pray to, besides Allah, lest, exceeding the limits, they abuse (back) Allah unknowingly. Thus have We made fair seeming to every community, their deeds, then to their Fosterer will be their return and He will inform them of that which they used to do.
If we speak ill about the false deities then the polytheists too may retaliate by speaking ill about Allah (SWT), we should therefore not instigate them and abstain from such acts. Every religious sect is made to feel that it is right and others are wrong, on the day of resurrection people will be informed as to who was right and who was wrong.
