Mahabharata 12.261.38

स्यूमरश्मिरुवाचस्यूमरश्मिरहं ब्रह्मञ्जिज्ञासार्थमिहागतःश्रेयस्कामः प्रत्यवोचमार्जवान्न विवक्षयाइमं च संशयं घोरं भगवान्प्रब्रवीतु मे

syūmaraśmiruvācasyūmaraśmirahaṃ brahmañjijñāsārthamihāgataḥśreyaskāmaḥ pratyavocamārjavānna vivakṣayāimaṃ ca saṃśayaṃ ghoraṃ bhagavānprabravītu me

Our plain-language meaning of this verse is waiting for scholar review.