Ashtavakra Gita · Verse 15.1 · Ashtavakra speaks

A man of pure intellect gains his end even by instruction casually imparted. The other is bewildered therein even after enquiring throughout life.
यथातथोपदेशेन कृतार्थः सत्त्वबुद्धिमान् ।आजीवमपि जिज्ञासुः परस्तत्र विमुह्यति ॥ १५-१॥
yathātathopadeśena kṛtārthaḥ sattvabuddhimān |ājīvam api jijñāsuḥ parastatra vimuhyati ||

Word by word

यथातथा

yathātathā

in whatever manner, casually

adverb

उपदेशेन

upadeśena

by instruction

noun, masculine, instrumental singular

कृतार्थः

kṛtārthaḥ

one who has gained his end

adjective, masculine, nominative singular

Self-knowledge dawns instantly on one whose intellect is fully purified through the necessary disciplines and the fourfold qualification.

सत्त्वबुद्धिमान्

sattvabuddhimān

of pure (sattvic) intellect

adjective, masculine, nominative singular

'Pure' indicates the intellect has been freed of Rajas and Tamas and is full of Sattva, the precondition for instantaneous realization.

आजीवम्

ājīvam

throughout life

adverb

अपि

api

even

indeclinable

जिज्ञासुः

jijñāsuḥ

desirous to know

adjective, masculine, nominative singular

परः

paraḥ

the other

pronoun, masculine, nominative singular

तत्र

tatra

therein

adverb

विमुह्यति

vimuhyati

is bewildered

verb, present, 3rd person singular