2 Samuel 16:4

Then said the king to Ziba, behold, thine [are] all that
[pertaineth] to Mephibosheth
Being forfeited to the king by an overt act of treason as they had been before by the rebellion of Ishbosheth, but had been graciously restored to Mephibosheth; and had it been true what Ziba suggested, it would have been a righteous thing to have taken them from him; though it seems to be too hasty a step in David to take and give them away without further inquiry:

and Ziba said, I humbly beseech thee [that] I may find grace in thy
sight, my lord, O king;
he had found favour already, but seems not to be sufficiently thankful for it, and satisfied with it, but craved more and other favours, when opportunity should serve.