एतन्मे संशयं कृष्ण छेत्तुमर्हस्यशेषतः।त्वदन्यः संशयस्यास्य छेत्ता न ह्युपपद्यते॥
etan me sanśayaṃ kṛṣṇa chettum arhasyaśeṣataḥtvad-anyaḥ sanśayasyāsya chettā na hyupapadyate
Word by word
The verse says
You should cut this doubt of mine completely, Krishna. There is nobody other than you who could cut it.
In plain words
Arjuna asks for the doubt to be cut, and the verb is the same one from 4.42.
Not answered. Cut.
And then the reason, which is not about Krishna's authority.
Where you've felt this · in friendship
There is one person whose answer on this would actually settle it for you. Not because they are cleverer than everyone else. Because they have seen you at your worst and stayed.
Going deeper
The reason Arjuna gives is worth separating from the one a religious text would usually give.
He does not say because you are the lord of all worlds, though he could. The claim is narrower and more human: nobody else could cut this particular doubt.
That fits the relationship the book keeps insisting on. At 4.3 he was called devotee and friend in the same line. The question he is asking now — will my unfinished attempt have been wasted — is not one you take to an authority. It is one you take to somebody who knows you.
Chettum arhasi — you are the one fit to cut it. An appeal to fitness, not to power.
And the answer that comes back is addressed in kind. Krishna's first word in the next verse is not a doctrine. It is a name.