לָנֻ֨ס שָׁ֜מָּה רוֹצֵ֗חַ אֲשֶׁ֨ר יִרְצַ֤ח אֶת־רֵעֵ֙הוּ֙ בִּבְלִי־דַ֔עַת וְה֛וּא לֹא־שֹׂנֵ֥א ל֖וֹ מִתְּמ֣וֹל שִׁלְשׁ֑וֹם וְנָ֗ס אֶל־אַחַ֛ת מִן־הֶעָרִ֥ים הָאֵ֖ל וָחָֽי׃
Para que huyese allí el homicida que matase á su prójimo por yerro, sin haber tenido enemistad con él desde ayer ni antes de ayer; y que huyendo á una de estas ciudades salvara la vida:
Makkot
Rabbi Yitzhak said: "What is the [meaning of] the verse: 'And he will flee to one of these cities and live' (Deuteronomy 4:42)? We make him [the manslayer] something that can be his livelihood [in the city of refuge]."
Makkot
It was taught [by a tanna]: "A student that is exiled—they exile his teacher with him." As it is said, "and live" (Deuteronomy 4:42)? We make him [the manslayer] something that can be his livelihood [in the city of refuge]. Rabbi Z'eira said: "From here [we learn] that one should not teach a student that is not discerning."
Bava Kamma
The fact that [a blind person is no in the category of liable to court-ordered deaths] is learned through a comparison between the words "Murderer" and "Murderer" from [the laws of those who are] liable to be exiled. ...