Happy is he and it is good for him
It is good for him. He is happy and content. He has a reason to feel good.
(Happy are you and it is good for you) ("When you eat the labor of your hands, happy are you and it is good for you" - Psalms 128:2, and similarly: "When you eat the labor of your hands" - these are good deeds a person does in this world, and what is his reward? "Happy are you and it is good for you" - happy are you in this world, and it is good for you in the world to come" - Midrash Bamidbar Rabbah 8, and likewise: "I envy you, Binyamin, there you shall fill your belly with carobs and figs and dates. Happy are you and it is good for you!" - Mendele Mokher Sefarim/Masaot Binyamin HaShlishi, 27, and: "Happy are you and it is good for you that you were born here and you do not know what antisemitic gentiles are" - A. Amir/Ahavat Shaul, 202)
Translation
Expression (Hebrew)
אַשְׁרָיו וְטוֹב לוֹ (אַשְׁרֶיךָ וְטוֹב לְךָ)
Definition (Hebrew)
טוֹב לוֹ. הוּא מְאֻשָּׁר וּמְרֻצֶּה. יֵשׁ לוֹ סִבָּה לְהַרְגִּישׁ טוֹב.
("יְגִיעַ כַּפֶּיךָ כִּי תֹאכֵל אַשְׁרֶיךָ וְטוֹב לָךְ" - תְּהִלִּים קכח ב, וְכֵן: "יַגִּיעַ כַּפֶּיךָ כִּי תֹּאכַל" - אֵלּוּ מַעֲשִׂים טוֹבִים שֶׁיַּגֵּעַ בָּהֶם בָּעוֹלָם הַזֶּה, וּמָה שְׂכָרוֹ? "אֲשָׂרֵךְ וְטוֹב לְךָ" - אַשְׁרֶיךָ בָּעוֹלָם הַזֶּה, וְטוֹב לְךָ לְעוֹלָם הַבָּא" - מִדְרָשׁ בְּמִדְבַּר רַבָּה ח, וְכֵן: "מְקַנֵּא אֲנִי בָּךְ בִּנְיָמִין, שָׁם תְּמַלֵּא כְּרֵסְךָ בְּחָרוּבִים וּבַתְּאֵנִים וּבִתְמָרִים. אַשְׁרֶיךָ וְטוֹב לְךָ!" - מֶנְדֵּלֵי מו"ס/ מַסְּעוֹת בִּנְיָמִין הַשְּׁלִישִׁי, כז, וְכֵן: "אַשְׁרֶיךָ וְטוֹב לְךָ שֶׁנּוֹלַדְתְּ פֹּה וְאַתָּה לֹא יוֹדֵעַ מָה זֶה גּוֹיִים אַנְטִישֵׁמִיִּים" - א.עָמִיר/ אַהֲבַת שָׁאוּל, 202)