Daniel 4:15 (BSB)

But leave the stump with its roots in the ground, with a band of iron and bronze around it, in the tender grass of the field. Let him be drenched with the dew of heaven and graze with the beasts on the grass of the earth.

From Daniel 4. Also in the ESV.

Commentary on Daniel 4:15

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Daniel 4:4-18: Nebuchadnezzar, before he relates the judgments of God that had been wrought upon him for his pride, gives an account of the fair warning he had of them before they came, a due regard to which might have prevented them.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Daniel 4:15: Nevertheless, leave the stump of his roots in the earth,.... Let him not be utterly destroyed, or his life taken away; but let him continue in being; though in a forlorn condition, yet with hope of restoration; for a tree may be cut down to the stump, and yet revive again, Job 14:7 and let his kingdom remain: even with a band of iron and...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Daniel 4:15: stump--The kingdom is still reserved secure for him at last, as a tree stump secured by a hoop of brass and iron from being split by the sun's heat, in the hope of its growing again (Isa 11:1; compare Job 14:7-9). BARNES refers it to the chaining of the royal maniac.
• Adam Clarke (Methodist), Clarke's Commentary on the Bible on Daniel 4:15: Leave the stump - Let him not be destroyed, nor his kingdom alienated.