John Gill Commentary 2 Samuel 11:8

"And David said to Uriah, Go down to thy house, and wash thy feet. And Uriah departed out of the king`s house, and there followed him a mess [of food] from the king." — 2 Samuel 11:8 (ASV)

And David said to Uriah, go down to your house, and wash your
feet
For his refreshment, and to prepare for bed, which was what he wanted to get him to:

and Uriah departed out of the king's house ;
in order as it might seem to the king to go to his own:

and there followed him a mess [of meat] from the king :
no doubt a delicious dish, to eat with his wife before he went to bed, to excite him the more to desire the enjoyment of her this mess consisted, according to Abarbinel, of bread, wine, and flesh; and who also observes, after Ben Gersom, that the word may be interpreted of a torch to light him home to his house, being night.