A person's worth is what they do well (what they know well).
قيمة كل امرئ ما يحسنه
Qīmatu kulli mri'in mā yuḥsinuh
Hazrat Ali, Nahj al-Balagha, saying 81 (Subhi al-Salih edition, p. 482; saying 81 in the Abduh edition). Nahj al-Balagha is a compilation by al-Sharif al-Radi (d. 1015), without chains of transmission.
Worth is not a title.
It is not lineage, it is not wealth.
Hazrat Ali says it briefly:
a person's worth is what they do well.
Mastery is a mirror.
There, a person is seen.
It also circulates as "what they seek."
The original text says "what they do well."