2 Samuel 19:24

Overview - 2 Samuel 19
Joab causes the king to cease his mourning.
The Israelites are earnest to bring the king back.
11 David sends to the priests to incite them of Judah.
18 Shimei is pardoned;
24 Mephibosheth excused;
32 Barzillai dismissed, and Chimham his son taken into the king's family.
41 The Israelites expostulate with Judah for bringing home the king without them.
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2 Samuel 19:24  (King James Version)
And Mephibosheth the son of Saul came down to meet the king, and had neither dressed his feet, nor trimmed his beard, nor washed his clothes, from the day the king departed until the day he came again in peace.

9:6 16:3

dressed his feet
Literally, made his feet, which seems to mean washing the feet paring the nails, and perhaps anointing or otherwise perfuming them, if not tinging the nails with henna; see Note on Deuteronomy 21:12
Sir John Chardin, in his MS. note on this place,
informs us, that it is customary in the East to have as much care of the feet as the hands; and that their barbers cut and adjust the nails with a proper instrument, because they often go barefoot. The nails of the toes of the mummies inspected in London in 1763, ; of which an account is given in the Philosophical Transactions for 1764, ; seem to have been tinged with some reddish colour. 15:30 Isaiah 15:2 ; Jeremiah 41:5 ; Matthew 6:16 ; Romans 12:15 ; Hebrews 13:3

Literally, made his beard, which may mean, combing, curling, and perfuming it
But Mr. Morier says that they almost universally dye the beard black, by successive layers of a paste made of henna, and another made of the leaf of the indigo: the first tinging with an orange colour, and the next with a dark bottle green, which becomes jet black when exposed to the air for twenty-four hours.