The first part of the food is like the first oblation. One who eats should offer it as an oblation to prāṇa, saying - ‘Prāṇāya svāhā’ (i.e., I offer this as an oblation to prāṇa). With this, your prāṇa becomes pleased.
When prāṇa is pleased, the eye is pleased; when the eye is pleased, the sun is pleased; when the sun is pleased, heaven is pleased; when Swargaloka is pleased, whatever there is ruled by Swargaloka and the sun is pleased. Then when that is pleased, the eater derives pleasure from his children, from his animals, from an abundance of food, from physical strength, and from his good life and scholarship.