Katha Upanishad - Verse 2.3.19
Text: सह नाववतु । सह नौ भुनक्तु । सह वीर्यं करवावहै । तेजस्विनावधीतमस्तु मा विद्विषावहै ॥ १९ ॥ saha nāvavatu | saha nau bhunaktu | saha vīryaṃ karavāvahai | tejasvināvadhītamastu mā vidviṣāvahai || 19 || 19. Let Him protect us both; let us exert together may what we study be well studied; may we not hate. ओं शान्तिः शान्तिः शान्तिः ॥ oṃ śāntiḥ śāntiḥ śāntiḥ || Om! Peace! Peace! Peace!...