וְשָׁמַרְתָּ֛ אֶת־הַחֻקָּ֥ה הַזֹּ֖את לְמוֹעֲדָ֑הּ מִיָּמִ֖ים יָמִֽימָה׃ (ס)
연년이 기한에 이르러 이 규례를 지킬지니라
Targum Jonathan on Exodus
Thou shalt therefore keep this statute of the Tephillin in the season to which it belongs, on work days, not on sabbaths or solemnities; and by day, not by night.