Bhagavad Gita 10.38 Chapter 10, Verse 38

दण्डो दमयतामस्मि नीतिरस्मि जिगीषताम् ।
मौनं चैवास्मि गुह्यानां ज्ञानं ज्ञानवतामहम् ॥१०.३८॥

daṇḍo damayatāmasmi nītirasmi jigīṣatām
maunaṃ caivāsmi guhyānāṃ jñānaṃ jñānavatāmaham

Meaning

Of those who restrain I am the rod of discipline; of those who seek victory, wise policy; of secrets, silence; and of the wise, wisdom.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 10.38 (Chapter 10, The Yoga of Divine Glories (Vibhuti Yoga), Verse 38)