In plain words
The poet, of the Lord in his heart: He who is the master of all, the indwelling self of the earth, who pervades all that is in the eight directions, whom the Veda reveals, who is the meaning of the Veda, who rules heaven [Śrīvaikuṇṭham]: he of Vēṅkaṭam, which rises to the crescent moon and shines with streams full of water and ringing with sound, is within my heart.