In plain words
The poet, of the fruit of this decad: These are the verses Viṭṭucittaṉ set out on him who is like a mountain and has for his own the hill called Māliruñcōlai: him whose form is the eight-syllabled mantra [the Tirumantram], the nectar of the ocean of the four Vedas, the supreme, great wishing-tree, the lamp that sits above the finest meanings of the Vedānta; to know them is its fruit.