בָּר֥וּךְ אַתָּ֖ה בָּעִ֑יר וּבָר֥וּךְ אַתָּ֖ה בַּשָּׂדֶֽה׃
tu seras béni dans la ville, et béni dans les champs.
Chizkuni
ברוך אתה בעיר, “you will be blessed in the city;” all kinds of merchandise will be available there. An alternate interpretation of this phrase: you will be able to bring your harvests from the field safely into your barns in the city.
Da'at Zekenim
ברך אתה בעיר, “You will be blessed in the town;” you will be blessed for performing the commandments that are performed in an urban area, such as building a sukkah, attaching a mezzuzah to the doorposts of your houses, or a fence around the roof of your house.
Ibn Ezra
in the city This blessing extends to all kinds of commerce.