Easton's Bible Dictionary (1897)
Sleeping, called also Hashem (1 Chr. 11:34); a person, several of whose sons were in David’s body-guard (2 Sam. 23:32).
Smith's Bible Dictionary (1863)
(sleeping).
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
JA'SHEN (sleeping), the father of some of David's warriors, 2 Sam 23:32.