What is the scriptural duty of a householder regarding providing food to ascetics, according to the text?

According to the principles discussed in Chapter 9, there is a strict scriptural injunction for householders concerning food. Whatever food is cooked in the home should first be offered to ascetics and celibates before the householder partakes in it. The text warns that if a householder consumes food without first giving a portion to them, they begin to incur the need for penance. This is because the scriptures have entrusted the sustenance of ascetics and celibates to householders, as it is prohibited for ascetics to cook food for themselves.