This is the part from merchant of venice.
Portia is a lady who has inherited abundant wealth from her father. Inorder to protect his daughter from greedy men who come in quest of marrying her to get her wealth he devised the lottery of caskets. Only the person who loves her sincerely can find the right casket in which Portia's portrait is kept and this happens to be Bassanio 

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Bassanio had promised Antonio to tell him about somebody. Bassanio says that he goes on a secret pilgrimage which to meet Portia which signifies that he worships her like God. He compares her sunny locks to golden fleece which were very valuable.