Definition: A text is given in English. Translate it from the English language to the Gujarati language. The translation must not omit or add information to the original sentence.
Input: When to speak and when to keep quiet was his extraordinary quality, he added.
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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ક્યારે બોલવુ અને ક્યારે મૌન રહેવું એ તેમની અસાધારણ ગુણવત્તા હતી.