रात्रेश्चाजसौ
4.1.30 - 4.1.32
SV: रात्रेः च अ-जसौ
AV: अनुपसर्जनात् संज्ञा-छन्दसोः
Language Meaning: ङीप् comes after the word रात्रि in the छन्दस् (Vedas) and in denoting a Name except the affix जस्

Literal Meaning: of त्र of
flowर till संप्रदान (place/float+water) erect/long walk till open at furrow
Meaning explained:
use outside rope when
flowर (is) till getting float from water up to erect+walk measure upto opening of furrow

comments: संज्ञा-छन्दसोः does not seem relevant here