Daniel 2:42
And as the toes of the feet were part of iron, and part of clay, so the kingdom shall be partly strong, and partly broken.
Cross-reference
Daniel 7:24
Parallel
Daniel 7:24 explicitly identifies ten horns as ten kings, directly expanding on the ten toes' meaning.
Daniel 7:7
Parallel
Daniel 7:7's fourth beast with iron teeth and ten horns parallels the iron-clay toes of the divided kingdom.