«مَأْثُورَةٌ سُمْعَتُهُ وَشُهْرَتُهُ»
Its reputation and fame are widely known.
«قَدْ أُودِعَتْ سِرَّ الْغِنَى أَسِرَّتُهُ»
Its engraved lines seem to contain the secret of wealth.
Asirratuhu here signifies lines of a face or engraved marks on the coin; it is not a reference to a family. This precision matters: the poet turns the coin’s visible stamped lines into the emblem of riches.