כְּבֹאֲכֶ֣ם הָעִ֣יר כֵּ֣ן תִּמְצְא֣וּן אֹת֡וֹ בְּטֶרֶם֩ יַעֲלֶ֨ה הַבָּמָ֜תָה לֶאֱכֹ֗ל כִּ֠י לֹֽא־יֹאכַ֤ל הָעָם֙ עַד־בֹּא֔וֹ כִּֽי־הוּא֙ יְבָרֵ֣ךְ הַזֶּ֔בַח אַחֲרֵי־כֵ֖ן יֹאכְל֣וּ הַקְּרֻאִ֑ים וְעַתָּ֣ה עֲל֔וּ כִּֽי־אֹת֥וֹ כְהַיּ֖וֹם תִּמְצְא֥וּן אֹתֽוֹ׃
As soon as ye are come into the city, ye shall straightway find him, before he go up to the high place to eat; for the people will not eat until he come, because he doth bless the sacrifice; and afterwards they eat that are bidden. Now therefore get you up; for at this time ye shall find him.’
Mishnah Megillah
A child may read in the Torah and translate, but he may not pass before the ark or lift up his hands. A person in rags may lead the responsive reading of the Shema and translate, but he may not read in the Torah, pass before the ark, or lift up his hands. A blind man may lead the responsive reading of the Shema and translate. Rabbi Judah says: one who has never seen the light from his birth may not lead the responsive reading of the Shema.