אֵין בֵּית דִּין עוֹנְשִׁין בְּאֹמֶד הַדַּעַת אֶלָּא עַל פִּי עֵדִים בִּרְאָיָה בְּרוּרָה. אֲפִלּוּ רָאוּהוּ הָעֵדִים רוֹדֵף אַחַר חֲבֵרוֹ וְהִתְרוּ בּוֹ וְהֶעֱלִימוּ עֵינֵיהֶם אוֹ שֶׁנִּכְנְסוּ אַחֲרָיו לְחֻרְבָּה וְנִכְנְסוּ אַחֲרָיו וּמְצָאוּהוּ הָרוּג וּמְפַרְפֵּר וְהַסַּיִף מְנַטֵּף דָּם בְּיַד הַהוֹרֵג הוֹאִיל וְלֹא רָאוּהוּ בְּעֵת שֶׁהִכָּהוּ אֵין בֵּית דִּין הוֹרְגִין בְּעֵדוּת זוֹ וְעַל זֶה וְכַיּוֹצֵא בּוֹ נֶאֱמַר (שמות כג ז) "וְנָקִי וְצַדִּיק אַל תַּהֲרֹג". וְכֵן אִם הֵעִידוּ עָלָיו שְׁנַיִם שֶׁעָבַד עֲבוֹדָה זָרָה זֶה רָאָהוּ שֶׁעָבַד אֶת הַחַמָּה וְהִתְרָה בּוֹ וְזֶה רָאָהוּ שֶׁעָבַד אֶת הַלְּבָנָה וְהִתְרָה בּוֹ אֵין מִצְטָרְפִין. שֶׁנֶּאֱמַר וְנָקִי וְצַדִּיק אַל תַּהֲרֹג הוֹאִיל וְיֵשׁ שָׁם צַד לְנַקּוֹתוֹ וְלִהְיוֹתוֹ צַדִּיק אַל תַּהַרְגוּהוּ:
A court does not inflict punishment on the basis of conclusions which it draws, only on the basis of the testimony of witnesses with clear proof. Even if witnesses saw a person pursuing a colleague, they gave him a warning, but then diverted their attention, punishment is not inflicted on the basis of their testimony. Or to give a graphic example, the pursuer entered into a ruin, following the pursued and the witnesses followed him. They saw the victim slain, in his death throes, and the sword dripping blood in the hand of the killer, since they did not see him strike him, the court does not execute the killer based on this testimony. Concerning this and the like, Exodus 23:7 states: "Do not kill an innocent and righteous person." Similarly, if two people testified that a person served a false deity in different circumstances, e.g., one saw him serve the sun and warned him, while the other saw him serve the moon and warned him, their testimonies are not combined. This can also be inferred from the verse: "Do not kill an innocent and righteous person." Since there is a rationale on which basis he could be held innocent and righteous, he should not be executed.
