Verse
तानि सर्वाणि संयम्य युक्त आसीत मत्परः ।वशे हि यस्येन्द्रियाणि तस्य प्रज्ञा प्रतिष्ठिता ॥
Having brought all the senses under control, he must sit firm in Yoga, wholly given up to Me; for whose senses are mastered, of him the intelligence is firmly established (in its proper seat).
Gītā 2·61