Reference for Megillah 3:11

אימא זמנים טובא זמניהם דומיא דזמנם מה זמנם תרי אף זמניהם תרי

And I could say, "'Their times’ means numerous times. The expression ‘their times’ is to ‘their time’: Just as ‘their time’ would indicate two [days], so ‘their times’ indicates two [extra days].

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