तदैवमात्मन्यवरुद्धचित्तो
न वेद किञ्चिद् बहिरन्तरं वा ।
यथेषुकारो नृपतिं व्रजन्त-
मिषौ गतात्मा न विवेद पार्श्वे ॥
tadaivam ātmany avaruddha-citto
na veda kiñcid bahir antaraṁ vā |
yatheṣu-kāro nṛpatiṁ vrajantam
iṣau gatātmā na viveda pārśve ||
(Śrīmad Bhāgavatam: 11.9.13)
“Then, in this way, the mind shut in upon the ātmā does not perceive anything external [e.g., sights] or internal [e.g., memories], just as an arrow-maker, his mind absorbed in [crafting] arrows, did not notice in the least a king passing beside him [with a large entourage playing kettle-drums].”