YLT
(i)
10 and Amasa hath not been watchful of the sword that
is in the hand of Joab, and he smiteth him with it unto the fifth
rib, and sheddeth out his bowels to the earth, and he hath not repeated
it to him, and he dieth; and Joab and Abishai his brother have pursued after Sheba son of Bichri.