The 206th mitzvah is that we are commanded to love each other as we love ourselves. I should have mercy for and love my brother as faithfully as I love and have mercy for myself. This applies to his financial and physical state, and whatever he has or desires. What I want for myself I should want for him, and whatever I don't want for myself or my friends, I shouldn't want for him.

The source of this commandment is G‑d's statement,1 "You must love your neighbor as [you love] yourself."