Śrīmad-Bhāgavatam · Text 11.9.13
Who is speaking and story frame
तदैवमात्मन्यवरुद्धचित्तो
न वेद किञ्चिद् बहिरन्तरं वा ।
यथेषुकारो नृपतिं व्रजन्त-
मिषौ गतात्मा न ददर्श पार्श्वे ॥ १३ ॥
tadaivam ātmany avaruddha-citto
na veda kiñcid bahir antaraṁ vā
yatheṣu-kāro nṛpatiṁ vrajantam
iṣau gatātmā na dadarśa pārśve
Thus, when one’s consciousness is completely fixed on the Absolute Truth, the Supreme Personality of Godhead, one no longer sees duality, or internal and external reality. The example is given of the arrow maker who was so absorbed in making a straight arrow that he did not even see or notice the king himself, who was passing right next to him.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.