Reference for Menachot 10:5
מִשֶּׁקָּרַב הָעֹמֶר, יוֹצְאִין וּמוֹצְאִין שׁוּק יְרוּשָׁלַיִם שֶׁהוּא מָלֵא קֶמַח וְקָלִי, שֶׁלֹּא בִרְצוֹן חֲכָמִים, דִּבְרֵי רַבִּי מֵאִיר. רַבִּי יְהוּדָה אוֹמֵר, בִּרְצוֹן חֲכָמִים הָיוּ עוֹשִׂים. מִשֶּׁקָּרַב הָעֹמֶר, הֻתַּר הֶחָדָשׁ מִיָּד, וְהָרְחוֹקִים מֻתָּרִים מֵחֲצוֹת הַיּוֹם וּלְהַלָּן. מִשֶּׁחָרַב בֵּית הַמִּקְדָּשׁ, הִתְקִין רַבָּן יוֹחָנָן בֶּן זַכַּאי, שֶׁיְּהֵא יוֹם הָנֵף כֻּלּוֹ אָסוּר. אָמַר רַבִּי יְהוּדָה, וַהֲלֹא מִן הַתּוֹרָה הוּא אָסוּר, שֶׁנֶּאֱמַר (ויקרא כג), עַד עֶצֶם הַיּוֹם הַזֶּה. מִפְּנֵי מָה הָרְחוֹקִים מֻתָּרִים מֵחֲצוֹת הַיּוֹם וּלְהַלָּן, מִפְּנֵי שֶׁהֵן יוֹדְעִין שֶׁאֵין בֵּית דִּין מִתְעַצְּלִין בּוֹ:
Once the <i>omer</i> was offered, they used to go out and find the market of Jerusalem already full of flour and parched grain [of the new produce], [though this was] against the will of the Sages, [these are] the words of Rabbi Meir; Rabbi Judah says: they were acting [in accordance with] the will of the Sages. Once the <i>omer</i> was offered, the new grain was permitted immediately, but for those that lived far off it was permitted only after midday. After the Temple was destroyed Rabbi Yohanan ben Zakkai decreed that it should be forbidden throughout the day of the waving. Rabbi Judah said: Is it not forbidden [in such a case] by the Torah, for it is said, “Until this very day?” (Leviticus 23:14) So why was it permitted for those that lived far away from midday [when the Temple stood]? Because they know that the court would not be lazy regarding it.