281. Disposing of Bread

42:10 We may use bread or any other kind of food for medicinal purposes even though it may be ruined through this use. (The Mishnah Brurah extends this to anything that one needs to do that is typically accomplished using some food item, for example, anointing with oil – MB 171:4.)

42:11 One should not simply throw crumbs away; this is believed to be metaphysically connected to one’s livelihood. It is preferable to feed one’s crumbs to the birds. (Mishnah Brurah 180:10 permits one to throw away crumbs, he merely cautions against scattering them on the ground and walking on them.)