Mahabharata 3.191.15

ततः स बकस्तमकूपारं कच्छपं विज्ञापयामासअस्त्यस्माकमभिप्रेतं भवन्तं कंचिदर्थमभिप्रष्टुम्साध्वागम्यतां तावदिति

tataḥ sa bakastamakūpāraṃ kacchapaṃ vijñāpayāmāsaastyasmākamabhipretaṃ bhavantaṃ kaṃcidarthamabhipraṣṭumsādhvāgamyatāṃ tāvaditi

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