וַיֹּאמֶר֩ לִ֨י הַמֶּ֜לֶךְ מַדּ֣וּעַ ׀ פָּנֶ֣יךָ רָעִ֗ים וְאַתָּה֙ אֵֽינְךָ֣ חוֹלֶ֔ה אֵ֣ין זֶ֔ה כִּי־אִ֖ם רֹ֣עַֽ לֵ֑ב וָאִירָ֖א הַרְבֵּ֥ה מְאֹֽד׃
And the king said unto me: ‘Why is thy countenance sad, seeing thou art not sick? this is nothing else but sorrow of heart.’ Then I was very sore afraid.
Rashi on Nehemiah
This is nothing This incident is only wickedness of heart, that you have in your heart to put me to death by poisoning this cup.
Rashi on Nehemiah
And I became very frightened And I became very frightened about this, lest the king accuse me falsely.