"And on the day that the Tabernacle was erected"
Rabbi Shimon tells Rabbi Chiya that anyone who gives freely to the poor becomes worthy to be blessed; he increases in both wealth and life. He elaborates by saying that his charity causes him an increase in life above so that it increases his life below. We hear that in this way the Tree of Life is awakened to add life to the Tree of Death. Through a person's charity he causes Zeir Anpin and Malchut to join together and blessings to pour above and below. He is saved in this world and he shall have life in the World to Come.