ציטירנדיקער פּירוש אויף קהלת 10:13

תְּחִלַּ֥ת דִּבְרֵי־פִ֖יהוּ סִכְל֑וּת וְאַחֲרִ֣ית פִּ֔יהוּ הוֹלֵל֖וּת רָעָֽה׃

דער אָנהײב פֿון די װערטער פֿון זײַן מױל איז נאַרישקײט, און דער סָוף פֿון זײַן רעדן איז בײזע משוגעת.

Radak

(Mad) fools (הוללים) shall not stand before Thine eyes: – The significance of הוללים is sometimes that of folly, as (in the passages) “And he played the fool in their hands” (1 Sam. 21:14); “I said it is foolish” (Eccles. 2:2); and sometimes it is used with the significance of wickedness, as (in the passage) “mischievous madness” (הוללות) (ibid. 10:13), and similar instances. And in this sense (is the clause to be taken here)-(Mad) fools shall not stand before Thine eyes, as he proceeds to say
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Rashi

and be like madmen an expression of madness, they shall be mad.
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Rashi

reproach Heb. תהלה, an expression of folly.
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