Numbers 32:5

Wherefore, said they, if we have found grace in thy sight, let this land be given unto thy servants for a possession, and bring us not over Jordan.

Cross-reference

Numbers 26:54 commands land division by tribe size — a principle the tribes' request in 32:5 would bypass by settling early.

In Deuteronomy 3:25, Moses pleads to cross over Jordan, directly opposite to the Reubenites' request here — a clear contrast.

Joshua 7:7 Contrast

Joshua 7:7 expresses reluctance about crossing the Jordan after defeat — a different response to the land, contrasting the tribes' desire to stay east.