Bhagwad Gita
Chapter 6, Verse 39
एतन्मे संशयं कृष्ण छेत्तुमर्हस्यशेषतः।
त्वदन्यः संशयस्यास्य छेत्ता न ह्युपपद्यते।।6.39।।
This is my doubt O Krsna, and I ask You to dispel it completely. But for Yourself, no one is to be found who can destroy this doubt.