In plain words
The poet, to the Lord of Araṅgam: O you who dwell in the great city of Araṅgam! If the Jains full of hatred, the shaven-headed [Śaivas] and the unfortunate Buddhists speak things about you that cannot be borne, it is best that the very hearing become a sickness and one pass away of it. But if the chance comes to me, and I have the strength, then cutting off their head right there is the deed to do, see.