योऽवमन्येत ते मूले हेतुशास्त्राश्रयाद् द्विजः । स साधुभिर्बहिष्कार्यो नास्तिको वेदनिन्दकः ॥ ११ ॥
Every twice-born man, who, relying on the Institutes of dialectics, treats with contempt those two sources (of the law), must be cast out by the virtuous, as an atheist and a scorner of the Veda.
वेदः स्मृतिः सदाचारः स्वस्य च प्रियमात्मनः । एतच्चतुर्विधं प्राहुः साक्षाद् धर्मस्य लक्षणम् ॥ १२ ॥
The Veda, the sacred tradition, the customs of virtuous men, and one’s own pleasure, they declare to be visibly the fourfold means of defining the sacred law.
The knowledge of the sacred law is prescribed for those who are not given to the acquisition of wealth and to the gratification of their desires; to those who seek the knowledge of the sacred law the supreme authority is the revelation (Sruti).
उदितेऽनुदिते चैव समयाध्युषिते तथा । सर्वथा वर्तते यज्ञ इतीयं वैदिकी श्रुतिः ॥ १५ ॥
(Thus) the (Agnihotra) sacrifice may be (optionally) performed, at any time after the sun has risen, before he has risen, or when neither sun nor stars are visible; that (is declared) by Vedic texts.