to give alms
賉 centers on giving alms, that is, providing charitable aid or relief to those in need.
賉 combines 貝 (shell, money) with 血 (blood), likely suggesting giving money as a life-sustaining act, but the exact historical development is uncertain.
Shells (貝) were ancient money, and blood (血) represents life. Picture giving shells to someone whose lifeblood is low, providing alms to sustain them.
For シュツ, imagine a person giving alms while wearing sturdy shoes: shoes -> シュツ, and the shells help the needy.