The true activity of the sense organs — mind, sight, words and all the knowledge-gathering and working senses — is to engage fully in My service. Unless his senses are thus engaged, a living entity cannot think of getting out of the great entanglement of material existence, which is exactly like Yamarāja’s stringent rope.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
मनो वचो दृक्करणेहितस्य साक्षात्कृतं मे परिबर्हणं हि । विना पुमान् येन महाविमोहात् कृतान्तपाशान्न विमोक्तुमीशेत्
mano vaco dṛkkaraṇehitasya sākṣātkṛtaṃ me paribarhaṇaṃ hi | vinā pumān yena mahāvimohāt kṛtāntapāśānna vimoktumīśet
SB 5.5.27