If He had fed us the manna, and had not given us the Shabbat — Dayenu, it would have sufficed!

Ilu he'echilanu et haman, v'lo natan lanu et hashabbat, dayeinu!

אִלּוּ הֶאֱכִילָנוּ אֶת הַמָּן וְלֹא נָתַן לָנוּ אֶת הַשַּׁבָּת דַּיֵּנוּ


haggadah Section: Koreich
Source: http://en.wikipedia.org/wiki/Dayenu