BG Chap 12 - The advanced stage of bhakti
Kṛṣṇa asks Arjuna to fix his mind upon Him, the Supreme Lord, and engage his intelligence in Him. One who does this will live in Kṛṣṇa without doubt. A jñānī tries to fix his mind on the unmanifest and the reality of his spiritual existence as a soul. But Kṛṣṇa’s direct order is that the mind should be concentrated on the form of Śyāmasundara wearing yellow cloth and forest garland, and not on impersonal Brahman. The intelligence should continually reflect on the statements of the scriptures, which would result in meditation. Such a devotee would attain residence near Kṛṣṇa. This is the most advanced stage of bhakti: to always think of Kṛṣṇa in attachment and transcendental affection.