Depicts using a rod (攵) to attack a person (皃). Based on the original meaning "to attack from the side", now written as 𢶡. The current meaning is a phonetic loan.
Shuowen Jiezi
《說文》：“敫，光景流也。从白，从放，讀若龠。”
Original meaning
to attack from the side
Components
皃(iconic) — Used here to depict a person. Bottom part looks like 方.
攵(iconic) — 攵 is a component form of 攴. Depicts a hand holding a rod.