The word pratiṣṇāta is irregularly formed when meaning 'sūtra'.,
Thus प्रतिष्णातः सूत्रम् i. e. शुद्धम् 'pure'. When it has not this meaning we have प्रतिस्नातं = 'bathed',
Adhyāya 8 · Pāda 3 · Rule 90
The word pratiṣṇāta is irregularly formed when meaning 'sūtra'.,
Thus प्रतिष्णातः सूत्रम् i. e. शुद्धम् 'pure'. When it has not this meaning we have प्रतिस्नातं = 'bathed',