Whoever teaches this supreme secret to My devotees, establishing supreme devotion in Me, to Me certainly he shall reach, without doubt.

Reward for teaching. Paramaṃ guhyaṃ — supreme and secret knowledge. Mad-bhakteṣu — to My devotees (receptive).

Bhaktiṃ mayi parāṃ kṛtvā — making supreme devotion in Me. One who teaches with devotion purifies and approaches more.

Mām eva eṣyati — to Me alone he shall reach. Saṃśayaḥ — without doubt (the word functions as absolute certainty).