trirātram āhur āśaucam ācārye saṃsthite sati / tasya putre ca patnyāṃ ca divārātram iti sthitiḥ // śrotriye tūpasaṃpanne trirātram aśucir bhavet / mātule pakṣiṇīṃ rātriṃ śiṣyartvigbāndhaveṣu ca //
They declare that, when the teacher (akarya) has died, the impurity (lasts) three days; if the (teacher's) son or wife (is dead, it lasts) a day and a night; that is a settled (rule). For a Srotriya who resides with (him out of affection), a man shall be impure for three days; for a maternal uncle, a pupil, an officiating priest, or a maternal relative, for one night together with the preceding and following days.