to accumulate, to hoard, to store up
儹 centers on gathering and keeping things in quantity: accumulating, hoarding, or storing up resources.
儹 combines 亻 (person) with 贊, which likely contributes the sound and may relate to gathering or assisting. The exact historical development is uncertain.
A person 亻 beside 贊, which looks like a pile of stacked items (目 over 貝 with extra strokes), suggests someone piling up and storing things.
For サン, imagine a person hoarding sand: sand -> サン, and the person 亻 keeps piling it up.