Apastamba Dharmasutra
Āpastamba Dharmasūtra (Sanskrit: आपस्तम्ब धर्मसूत्र) is a Sanskrit text and one of the oldest Dharma - post-vedic smriti-related texts of Hinduism that have survived into the modern age from the 1st millennium BCE. It is one of three extant Dharmasutras texts from the Taittiriya school which is relatively newer in comparison to Maitrayaniya shakha of Krishna Yajurveda, the other two being Baudhayana Dharmasutra and Hiranyakesin Dharmasutra. The Apastamba Dharmasutra is part of Apastamba Kalpasutra collection, along with Apastamba Shrautasutra and Apastamba Grihyasutra.