The meat, in the form of quails, appeared in the evening and covered the Israelite camp. In the morning, bread – called manna – fell from heaven, encased between layers of morning dew. Moses told the Israelites to gather one omer (a biblical measure) of manna per household member every day. Miraculously, no matter how much manna one picked, he arrived home with precisely one omer per head. Furthermore, Moses commanded the Israelites not to leave any manna over from one day to the next. Some disregarded this instruction, and next morning found their manna worm-infested. On Friday everyone picked two omers. Moses explained that the second portion was to be prepared and set aside for Shabbat—when no manna would fall. Again some disregarded Moses' directive, and went out pick manna on Shabbat. G‑d was angered by this disobedience. G‑d instructed Moses to take a jar of manna and place it in the (yet to be constructed) Tabernacle, as a testament for all future generations.