John Gill Commentary 2 Kings 9:25

"Then said [Jehu] to Bidkar his captain, Take up, and cast him in the portion of the field of Naboth the Jezreelite; for remember how that, when I and thou rode together after Ahab his father, Jehovah laid this burden upon him:" — 2 Kings 9:25 (ASV)

Then said [Jehu] to Bidkar his captain
Not Joram's, but Jehu's captain, though he had been the former's, and his father Ahab's also:

take up, and cast him in the portion of the field of Naboth the
Jezreelite ;
near to which they were:

for remember how that, when I and you rode together after Ahab his
father ;
either in the same chariot, or on horseback side by side, his guards or retinue following him two and two:

the Lord laid this burden upon him ;
this heavy denunciation of vengeance by Elijah the prophet; and they being together, and pretty near, heard it, as he might remember, which follows.