वैराग्यं च मुमुक्षुत्वं तीव्रं यस्य तु विद्यते ।तस्मिन्नेवार्थवन्तः स्युः फलवन्तः शमादयः ॥ ३० ॥
In plain words
Only in the person whose dispassion and longing for freedom burn intensely do all the other qualities — calmness and the rest — actually come alive and bear fruit.
Close to the Sanskrit
But in whomsoever intense dispassion and desire for liberation exist, in that one alone the qualities of calmness and the rest become meaningful and fruitful.