ज्ञातव्या सापि यत्नेन ब्राह्मणैः शुद्धि कर्मणि
jñātavyā sāpi yatnena brāhmaṇaiḥ śuddhi karmaṇi
Auch sie muss von den Brāhmaṇas bei der Vollziehung des Reinigungsritus mit Sorgfalt und Eifer festgestellt werden.
Skanda (deduced)
Scene: A group of brāhmaṇas conferring, one holding a water-pot and kuśa grass, another reading a record; their faces show focused diligence; the ritual space is prepared with cleanliness and order.
Ritual acts should be performed with conscientious care; diligence is itself a form of dharma.
No specific tīrtha is mentioned in this line.
Brāhmaṇas conducting śuddhi-karma must diligently verify the relevant person(s) in the lineage.