tam eva saranam gaccha
tat-prasadat param santim
sthanam prapsyasi sasvatam
Word for word:
tam — unto Him; eva — certainly; saranam gaccha — surrender; sarva-bhavena — in all respects; bharata — O son of Bharata; tat-prasadat — by His grace; param — transcendental; santim — peace; sthanam — the abode; prapsyasi — you will get; sasvatam — eternal.
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O scion of Bharata, surrender unto Him utterly. By His grace you will attain transcendental peace and the supreme and eternal abode.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
A living entity should therefore surrender unto the Supreme Personality of Godhead, who is situated in everyone’s heart, and that will relieve him from all kinds of miseries of this material existence. By such surrender, not only will one be released from all miseries in this life, but at the end he will reach the Supreme God. The transcendental world is described in the Vedic literature (Rg Veda 1.22.20) as tad visnoh paramam padam. Since all of creation is the kingdom of God, everything material is actually spiritual, but paramam padam speciﬁcally refers to the eternal abode, which is called the spiritual sky or Vaikuntha.
In the Fifteenth Chapter of Bhagavad-gita it is stated, sarvasya caham hrdi sannivistah: the Lord is seated in everyone’s heart. So this recommendation that one should surrender unto the Supersoul sitting within means that one should surrender unto the Supreme Personality of Godhead, Krishna. Krishna has already been accepted by Arjuna as the Supreme. He was accepted in the Tenth Chapter as param brahma param dhama. Arjuna has accepted Krishna as the Supreme Personality of Godhead and the supreme abode of all living entities, not only because of his personal experience but also because of the evidence of great authorities like Narada, Asita, Devala and Vyasa.