taḿ naḥ samādiśopāyaḿ
yena te caraṇābjayoḥ
smṛtir yathā na viramed
api saḿsaratām iha
tam -- that; nah -- to us; samadisa -- please instruct; upayam -- the means; yena -- by which; te -- Your; carana -- of the feet; abjayoh -- lotuslike; smritih -- remembrance; yatha -- as; na viramet -- may not cease; api -- even; samsaratam -- for those traveling through the cycle of birth and death; iha -- in this world.
One can constantly remember the Lord only by His mercy. Such remembrance is the easy method to obtain supreme liberation, as explained in Bhagavad-gita (8.14):
ananya-cetah satatam
yo mam smarati nityasah
tasyaham sulabhah partha
nitya-yuktasya yoginah
"For one who always remembers Me without deviation, I am easy to obtain, O son of Pritha, because of his constant engagement in devotional service."
The words api samsaratam iha indicate that the kings were approaching Lord Krishna not merely for liberation but rather for the boon of always being able to remember His lotus feet. Such constant remembrance is a symptom of love, and love of Godhead is the actual goal of life.