Midrash su I Re 17:14

Another explanation of The blessing of the Lord, it maketh rich. This refers to Elijah’s blessing in the home of (the widow of) Zarephath, as is said: The jar of meal shall not be spent, neither shall the cruse of oil fail, until the day that the Lord sendeth rain upon the land (I Kings 17:14). Though many jars were filled and much meal was ground, yet the jar of meal shall not be spent, etc. Hence, the blessing of the Lord, it maketh rich, and toil addeth nothing thereto implies that she was blessed in her own home.

Rabbi Tanchum said: Joseph commanded and they built the treasure-houses in each city, and he gathered all the produce of the lands into the treasure-houses. The Egyptians were scoffing at him, saying: Now the worms will eat the stores of Joseph. But no worm had any power over them; neither did the (stores) diminish until the day of his death. And he supported the land in the famine of bread, therefore was his name called Kalkol. And Kalkol is Joseph, as it is said, "And Joseph nourished" (Gen. 47:12). Moreover, he nourished his father, and his brethren, and all his father's house, in the famine with bread to their satisfaction. "And Joseph nourished his father, and his brethren, and all his father's household, with bread, according to their families" (ibid.) ||