And it also contains the rules of the four castes and the essence of all the Puranas, an account of asceticism and rules for the religious student; the dimensions of the earth, of the sun and moon.
चातुर्वर्ण्यविधानं च पुराणानां च कृत्स्नशः। तपसो ब्रह्मचर्यस्य पृथिव्याश्चन्द्रसूर्ययोः॥