Charles Ellicott Commentary 1 Chronicles 19:5

"Then there went certain persons, and told David how the men were served. And he sent to meet them; for the men were greatly ashamed. And the king said, Tarry at Jericho until your beards be grown, and then return." — 1 Chronicles 19:5 (ASV)

Ashamed. — Not the usual term (bôsh), but a stronger word, confounded (niklam; properly, pricked, wounded). (Compare Psalm 35:4, where it forms a climax to the other.)

Be grown. — Sprout, or shoot (Judges 16:22, of Samson’s hair).

Jericho lay on their road to the capital.