To be meticulous in..., to be exacting about... like a hair's breadth
To be exacting about every detail in..., to be meticulous regarding...
("And those around Him are very thin (Psalms 90) - teaches that the Holy One Blessed be He is meticulous with those around Him like a hair's breadth. Rabbi Hanina said, from here (Psalms 89) a God revered in the secret of great and awesome holiness over all His surroundings" - Yevamot 121b, and also: "A priest... even though he is not wise and does not exact the commandments, or if the creatures were singing after him... behold, he raises his hands, and none prevent him" - Rambam / Sefer Ahavah, Laws of Prayer and Priestly Blessing, chapter fifteen, 211, and also: "Everything depends on the upbringing of the wise - he must be meticulous with himself and act before the judgment measure" - Rambam / Sefer Hamada, Laws of the Foundations of the Torah, chapter five, 11, 87, and also: "He was forced to rent cheap apartments, and was not meticulous with his tenants" - Agnon / Yesterday, 154, and also: "He who enjoyed the fruit of his labor... his face is good and he is meticulous in the commandment and the spirit of the creatures rests upon him" - Chaim Sabato / Like the Eyelids of Dawn, 71)
Translation
Expression (Hebrew)
דִּקְדֵּק ב..., דִּקְדֵּק עַל...כְּחוּט הַשְּׂעָרָה
Definition (Hebrew)
הִקְפִּיד עַל כָּל פְּרָט ב..., דִּיֵּק לְגַבֵּי...
("וּסְבִיבָיו נְשַׁעֲרָהּ מְאֹד(תְּהִלִּים נ)- מְלַמֵּד, שֶׁהַקָּדוֹשׁ בָּרוּךְ הוּא מְדַקְדֵּק עִם סְבִיבָיו כְּחוּט הַשַּׂעֲרָה. ר' חֲנִינָא אָמַר, מֵהָכָא )תְּהִלִּים פָּט) אֵל נַעֲרָץ בְּסוֹד קְדֹשִׁים רַבָּה וְנוֹרָא עַל כָּל סְבִיבָיו"- יְבָמוֹת קכא ע"ב, וְכֵן:"כֹּהֵן...אַף עַל פִּי שֶׁאֵינוֹ חָכָם וְאֵינוֹ מְדַקְדֵּק בַּמִּצְווֹת, אוֹ שֶׁהָיוּ הַבְּרִיּוֹת מְרַנְּנִין אַחֲרָיו...הֲרֵי זֶה נוֹשֵׂא אֶת כַּפָּיו, וְאֵין מוֹנְעִין אוֹתוֹ"- הָרַמְבָּ"ם/ סֵפֶר אַהֲבָה,הִלְכוֹת תְּפִלָּה וּבִרְכַּת כֹּהֲנִים, פֶּרֶק חֲמִשָּׁה עָשָׂר, ו, 211, וְכֵן:"הַכֹּל לְפִי גָּדְלוֹ שֶׁלֶּחָכָם- צָרִיךְ שֶׁיְּדַקְדֵּק עַל עַצְמוֹ וְיַעֲשֶׂה לִפְנִים מִשּׁוּרַת הַדִּין"- הָרַמְבָּ"ם/ סֵפֶר הַמַּדָּע, הִלְכוֹת יְסוֹדֵי תּוֹרָה, פֶּרֶק חֲמִישִׁי, יָא, 87, וְכֵן:"נִזְקַק לְהַשְׂכִּיר דִּירוֹת בְּזוֹל, וְלֹא הָיָה מְדַקְדֵּק עִם דַּיָּרָיו"-עַגְנוֹן/ תְּמוֹל שִׁלְשׁוֹם, 154, וְכֵן:"שֶׁנֶּהֱנָה הוּא מִיְּגִיעַ כַּפָּיו...וּפָנָיו טוֹבוֹת וּמְדַקְדֵּק בְּמִצְוַת וְרוּחַ הַבְּרִיּוֹת נוֹחָה הֵימֶנּוּ"- חַיִּים סָבָתוֹ/ כְּעַפְעַפֵּי שַׁחַר, 71)