See the entire entry for spq#3 vb. to slap, strike

TgJ 1Sam22:22 :וַאְנָא גְרַמִית לְאִסתַקָפָא/לְאִסתַפָקָא/ בְכָל נְפַש בֵית אְבוּך : while I caused myself to be responsible for all of your father's house [but understood as "to fall upon?"]

See the entire entry for sqp vb. D to transfer; Dt to fall upon, befall