Srimad-Bhagavatam: Canto 12 - Chapter 1 - Verse 9
Sanskrit:
तयोरागमनं साक्षादीशयोर्जगदात्मनो: ।न वेद रुद्धधीवृत्तिरात्मानं विश्वमेव च ॥ ९ ॥
ITRANS:
tayor āgamanaṁ sākṣādīśayor jagad-ātmanoḥna veda ruddha-dhī-vṛttirātmānaṁ viśvam eva ca
Translation:
Because Mārkaṇḍeya’s material mind had stopped functioning, the sage failed to notice that Lord Śiva and his wife, the controllers of the universe, had personally come to see him. Mārkaṇḍeya was so absorbed in meditation that he was unaware of either himself or the external world.