Mahabharata 1.139.1

वैशंपायन उवाच · vaiśaṃpāyana uvāca

तत्र तेषु शयानेषु हिडिम्बो नाम राक्षसःअविदूरे वनात्तस्माच्छालवृक्षमुपाश्रितः

tatra teṣu śayāneṣu hiḍimbo nāma rākṣasaḥavidūre vanāttasmācchālavṛkṣamupāśritaḥ

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