Exodus 24:8

ויזרק means sprinkling — he sprinkled it on the people (not he threw it against the people, as this word might imply; cf. e. g., Exodus 9:8: וזרקו משה השמימה). The Targum, however, renders it by: and he poured it (the blood) upon the altar as atonement for (על) the people, adding the words “upon the altar”, and taking על העם to denote “on behalf of the people”, i. e. he poured it out to atone for the people.

וַיִּקַּ֤ח מֹשֶׁה֙ אֶת־הַדָּ֔ם וַיִּזְרֹ֖ק עַל־הָעָ֑ם וַיֹּ֗אמֶר הִנֵּ֤ה דַֽם־הַבְּרִית֙ אֲשֶׁ֨ר כָּרַ֤ת יְהֹוָה֙ עִמָּכֶ֔ם עַ֥ל כׇּל־הַדְּבָרִ֖ים הָאֵֽלֶּה׃

And Moshe took the blood, and sprinkled it on the people, and said, Behold the blood of the covenant, which the Lord has made with you concerning all these words.