BG 6.39
एतन्मे संशयं कृष्ण छेत्तुमर्हस्यशेषतः। त्वदन्यः संशयस्यास्य छेत्ता न ह्युपपद्यते
etan me sanśhayaṁ kṛiṣhṇa chhettum arhasyaśheṣhataḥ tvad-anyaḥ sanśhayasyāsya chhettā na hyupapadyate
My Lord! You are worthy to solve this doubt once and for all; there is no one else competent to do so, save Yourself.
Translated by Shri Purohit Swami
O Krishna, please completely dispel this doubt of mine, for it is not possible for anyone but You to do so.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
etat—this; me—my; sanśhayam—doubt; kṛiṣhṇa—Krishna; chhettum—to dispel; arhasi—you can; aśheṣhataḥ—completely; tvat—than you; anyaḥ—other; sanśhayasya—of doubt; asya—this; chhettā—a dispeller; na—never; hi—certainly; upapadyate—is fit