Leviticus 24:14

השמעים THEY THAT HEARD — This refers to the witnesses. כל ALL [THOSE THAT HEARD] — 'all' serves to include the judges also (Sifra, Emor, Chapter 19 1). את ידיהם [AND ALL THAT HEARD HIM SHALL LAY] THEIR HANDS [UPON HIS HEAD] — They said to him: your blood is upon your head; we do not deserve punishment on account of your death, for it was you yourself who brought it about (Sifra, Emor, Chapter 19 2). כל העדה ALL THE CONGREGATION [SHALL CERTAINLY PELT HIM WITH STONES] — (This means: the witnesses shall stone him), all the congregation standing by (because it cannot possibly mean that all the 600,000 men comprising the whole of the congregation should stone him). From here, we may derive the legal principle that a man’s agent is as himself (i. e. that his actions are legally of the same effect as though they were carried out by those for whom he acts the order) (cf. Sifra, Emor, Chapter 19 23).

הוֹצֵ֣א אֶת־הַֽמְקַלֵּ֗ל אֶל־מִחוּץ֙ לַֽמַּחֲנֶ֔ה וְסָמְכ֧וּ כׇֽל־הַשֹּׁמְעִ֛ים אֶת־יְדֵיהֶ֖ם עַל־רֹאשׁ֑וֹ וְרָגְמ֥וּ אֹת֖וֹ כׇּל־הָעֵדָֽה׃

Bring forth him that has cursed outside the camp; and let all that heard him lay their hands upon his head, and let all the congregation stone him.