Mahabharata 3.270.22

धन्योऽसि यस्य ते निद्रा कुम्भकर्णेयमीदृशीय इमं दारुणं कालं न जानीषे महाभयम्

dhanyo'si yasya te nidrā kumbhakarṇeyamīdṛśīya imaṃ dāruṇaṃ kālaṃ na jānīṣe mahābhayam

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