ציטירנדיקער פּירוש אויף דניאל 6:21

They presented themselves as envoys. They made themselves look like messengers. The word יִצְטַיָרוּ messenger, is from, צִיר “וְצִיר בַּגוֹיִם שְׁלַח” (Ovadiah 1:1) [and a messenger was sent among the nations.] Every word whose root begins with a “צ” (צַדִי ), when used as a reflexive either in the form of מִתְפַּעֵל or נִתְפַּעֵל, is constructed with a “ט” (טֶית) in the middle and separates the root letters of the word,³Rashi thus explains why the letter “ט” was inserted in the word יִצְטַיָרוּ. like מַה נִצְטַדָק, (how can we justify ourselves).⁴See Bereishis 44:16. the root of נִצְטַדָק is צֶדֶק (justice) which he says as נִצְטַדָק. Similarly, וּמִטַל שְׁמַיָא גִשְׁמֵה יִצְטַבַע [His body was wet from the dew of Heaven)⁵Daniel 6:21. The root of יִצְטַבַע is צֶבַע.