You Collection, Middle Volume
Radical: Shell (bèi)
贖
Kangxi strokes: 22
Page 1213, Entry 21
Broad Rhymes (Guangyun), Collection of Rhymes (Jiyun), and Rhyme Meeting (Yunhui) define it as pronounced shu (rising tone).
Explaining Graphs and Analyzing Characters (Shuowen) states it means to trade.
The Jade Chapters (Yupian) defines it as a pledge. It refers to removing guilt with wealth.
Book of Documents (Shangshu), Canon of Shun (Shundian) states: Gold is used for redemption.
Commentary: Paying out gold to redeem a crime.
Also, according to the Collection of Rhymes (Jiyun), it is pronounced shu (falling tone).
Book of Odes (Shijing), Odes of Qin (Qinfeng) states: If one could be redeemed.
Explanation of Texts (Shiwen): Redress, also pronounced shu (falling tone).
Also, according to the Collection of Rhymes (Jiyun), it is also a surname.