Sanskrit
न च तस्मान्मनुष्येषु कश्चिन्मे प्रियकृत्तमः । भविता न च मे तस्मादन्यः प्रियतरो भुवि ॥ ६९ ॥
na ca tasmān manuṣyeṣu kaścin me priya-kṛttamaḥ bhavitā na ca me tasmād anyaḥ priyataro bhuvi
Translation
Nor is there any among men who performeth dearer service to Me than he, nor any other shall be more beloved by Me on earth than he.
Annie Besant · The Bhagavad-Gita, translated by Annie Besant (4th ed., 1922) — Wikisource · Public Domain
Explanation
Hyperbole in service of emphasis: no one performs dearer service, no one will ever be more beloved, than the one who carries this teaching forward. The escalation across verses 67-71 is deliberate — restriction, then reward for transmission, now maximal praise — building toward the graded promise the next two verses complete.