Bhagavad Gita 10.38
दण्डो दमयतामस्मि नीतिरस्मि जिगीषताम्। मौनं चैवास्मि गुह्यानां ज्ञानं ज्ञानवतामहम्।।10.38।।
daṇḍo damayatāmasmi nītirasmi jigīṣatām| maunaṃ caivāsmi guhyānāṃ jñānaṃ jñānavatāmaham||10.38||
dando damayatamasmi nitirasmi jigishatam maunam caivasmi guhyanam jnanam jnanavatamaham10.38
Meaning
Among punishers, He is the rod of chastisement; among those seeking victory, He is statesmanship; among secrets, He is silence; and among the wise, He is wisdom.
मैं दमन करने वालों का दण्ड हूँ और विजयेच्छुओं की नीति हूँ; मैं गुह्यों में मौन हूँ और ज्ञानवानों का ज्ञान हूँ।
This is verse 38 of 42 in Chapter 10 (Vibhooti Yoga) of the Bhagavad Gita.