Bhagavad Gita Chapter 12, Verse 8

मय्येव मन आधत्स्व मयि बुद्धिं निवेशय | निवसिष्यसि मय्येव अत ऊर्ध्वं न संशयः ||

mayy eva mana ādhatsva mayi buddhiṁ niveśaya nivasiṣyasi mayy eva ata ūrdhvaṁ na saṁśayaḥ

Fix your mind on Me alone, and place your intellect in Me. Thereafter, you will certainly live in Me. There is no doubt about this.

Krishna gives direct, practical guidance for those who want to follow the devotional path. 'Mayy eva mana ādhatsva mayi buddhiṁ niveśaya'—fix your mind (manaḥ ādhatsva) on Me alone (mayy eva), and place your intellect (buddhim niveśaya) in Me (mayi). 'Nivasiṣyasi mayy eva ata ūrdhvaṁ na saṁśayaḥ'—you will dwell (nivasiṣyasi) in Me (mayy eva) thereafter (ataḥ ūrdhvaṁ), there is no doubt (na saṁśayaḥ). This is practical instruction: fix both mind and intellect on Krishna. The promise is clear—'na saṁśayaḥ' means 'no doubt.' When you fix your mind and intellect on Krishna, you will dwell in Him. This verse bridges the transition from describing devotion to providing practical guidelines. It's a direct instruction that anyone can follow.