Parallels for PB, 7, 3.21.0

Text line: triṇidhanaṃ bhavaty etena vai mādhyandinaṃ savanaṃ pratiṣṭhitaṃ yat triṇidhanaṃ yat triṇidhanaṃ na syād apratiṣṭhitaṃ mādhyandinaṃ savanaṃ syāt //
no other annotations for this line