ŚiraUpan, 1, 36.7 kṣamāṃ hitvā hetujālasya mūlaṃ buddhyā saṃcitaṃ sthāpayitvā tu rudro rudram ekatvam āhuḥ /

ŚiraUpan, 1, 38.2 buddhyā saṃcitaṃ sthāpayitvā tu rudre rudram ekatvam āhuḥ //