Tosefta for Nehemiah 4:15
וַאֲנַ֖חְנוּ עֹשִׂ֣ים בַּמְּלָאכָ֑ה וְחֶצְיָ֗ם מַחֲזִיקִים֙ בָּֽרְמָחִ֔ים מֵעֲל֣וֹת הַשַּׁ֔חַר עַ֖ד צֵ֥את הַכּוֹכָבִֽים׃
So we wrought in the work; and half of them held the spears from the rising of the morning till the stars appeared.
Tosefta Berakhot
From when do we read Shema in the evenings? “From the time when people come [home] to eat their bread on Shabbat (Sabbath) nights,” [these are] the words of Rebbi Meir. And the Chachamim (Sages) say from the time when the Kohanim (priests) are able to eat their Terumah (heave offering). A sign for this is the coming out of the stars. And even though there is no explicit proof for this matter, there is an indirect reference: “… and half of them were holding spears from the morning twilight until the coming out of the stars.” (Nehemiah 4:15)
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