Likutei Moharan 58:4/ליקוטי מוהר"ן נ״ח:ד׳

14. By subduing the evil force of Amalek and rectifying the brit, [Moshe] merited the aspect of “the bread will be mishneh (double) what they gather daily” (Exodus 16:5). And of Yosef, who merited the brit, it is written (Genesis 41:43), “[Pharaoh] had him ride in the mishneh (second) royal chariot”—i.e., “mishneh what they gather daily.” By means of the brit one merits double bounty.

2This is the explanation of “two provide for one.” The aspect of Shabbat receives from Yosef “double bread”—i.e., Mishneh Torah, the aspect of “I was a source of daily delight” (Proverbs 8:30). And the aspect of Shabbat sends bounty to the other worlds, in the aspect of “But you may eat [the produce of] the Land’s shabbat (resting)” (Leviticus 25:6). This is the explanation of “one provides for a number of directions.”