3:60 (O Messenger) this is the truth from your Lord, so do not be of those who waver.
3:61 If anyone disputes with you in this matter, after the knowledge has come to you, then say, “Come! Let us call upon our children, and your children, and our women and your women, and our people and your people to leave one another alone, knowing that God's condemnation is upon the liars.”
[‘Bahl’ = To leave alone = Let someone hold on to his views = Let others do as they will. Erroneously, but commonly, Mubahila = A contest of mutual cursing! This verse has been subjected to much conjecture through ‘Shan-e-Nuzool’ (the circumstances of a Revelation.) Some exponents assert that the exalted Prophet is being told here to run a cursing contest with some Christians from Najran in Southern Arabia!]