Having warned Arjuna about the terrifying power of the senses (Verse 60), Krishna provides the ultimate defense mechanism. He commands the seeker to restrain all the senses completely (tāni sarvāṇi saṃyamya) and sit in yoga (yukta āsīta). But restraint alone is not enough; the critical key is 'mat-paraḥ' (fixed upon Me, or devoted to the Supreme). Krishna states that only a person whose senses are fully subjugated to this higher focus (vaśe hi yasyendriyāṇi) can truly have their wisdom firmly established (tasya prajñā pratiṣṭhitā).