Deuteronomy 11:6
And what he did unto Dathan and Abiram, the sons of Eliab, the son of Reuben: how the earth opened her mouth, and swallowed them up, and their households, and their tents, and all the substance that was in their possession, in the midst of all Israel:
Cross-references
Numbers 16:1 introduces the names Korah, Dathan, and Abiram — the very rebels swallowed by the earth here.
Numbers 16:31-33 describes the earth opening and swallowing Dathan, Abiram, and their households — the exact event Moses references.
Numbers 26:9 names Dathan and Abiram as those who rebelled and were swallowed — a direct historical cross-reference to the same incident.
Numbers 26:10 repeats that the earth swallowed them and they became a warning sign — reinforcing the same judgment event.
Psalm 106:17 explicitly says 'The earth opened and swallowed up Dathan, and covered the company of Abiram' — a poetic retelling of the same event.
Numbers 27:3 clarifies that Zelophehad died apart from Korah's rebellion — distinguishing other wilderness deaths from Dathan and Abiram's fate.