Sarva dharman — The entire duty lies in
parityajya — you attempting to try
mam — us —– (ourselves)
ekam — alone or “in solitude” (tel.)
saranam — to whom we surrender to or take shelter of (God)
vraja — in this all pervasive land (unwelcome influence or physical effect)
Link of Vraja
Shandilya Rishi said: Dear Parikshit and Vajranabha! I will tell you the secret of Vrajabhumi. Listen carefully. The meaning of the word “Vraja” is all-pervasive. According to ancient opinions, this land is named Vraja because it is all-pervasive. This land is an all-pervasive spiritual manifestation, situated beyond the three modes of material nature. Therefore this is called Vraja. This land is ever-blissful, effulgent, indestructible, and the abode of liberated souls.
There is more explanation on the link.
aham — I
tva — unto you
sarva–papebhyo — the entire fearful of sin
moksasyisyami — will deliver I you of
Ma — us/our or mother? (mother according to a Mahabharata video, and Sri Krishna’s words. He says go to your mother to be purified.
sucah — happiness
Iksvakave Full Meaning:
Our entire duty lies in you attempting to try us/ourselves “alone” or in solitude (because it is in solitude we understand and process god). To whom we surrender to or take shelter in this all pervasive land (that has unwelcome physical influences and effects) (see the link on Vraja Bhumi). I, in you — I am in you, the entire fearful of sin will deliver I you of us or our happiness.
Forward to 2:30 seconds to listen to the verse. 18.66!
If you scroll and go back you will see what he means by Nirmal.
Why is this the last message of Krishna and not 18.78?
yatra yog esvarah krsno