The name kanza is not in the Quran, but the word kanz occurs there six times, notably in the story of Musa and al-Khadir: the wall that was set upright hid “a treasure” belonging to two orphans whose father was righteous (18:82).
Meaning of the name Kenza
Kenza is the Maghrebi form of kanza, feminine of kanz, “treasure, wealth set aside and kept” (root k-n-z). The name is dear to Morocco: Kenza al-Awrabiyya, a Berber princess, married Idris I and was the mother of Idris II, founder of Fez, whom she raised after her husband’s death. It is now very popular in France and the Maghreb.
And as for the wall, it belonged to two orphan boys in the city, and there was beneath it a treasure for them, and their father had been righteous. So your Lord intended that they reach maturity and extract their treasure, as a mercy from your Lord. And I did it not of my own accord. That is the interpretation of that about which you could not have patience."
Then would you possibly leave [out] some of what is revealed to you, or is your breast constrained by it because they say, "Why has there not been sent down to him a treasure or come with him an angel?" But you are only a warner. And Allāh is Disposer of all things.
Indeed, Qārūn was from the people of Moses, but he tyrannized them. And We gave him of treasures whose keys would burden a band of strong men; thereupon his people said to him, "Do not exult. Indeed, Allāh does not like the exultant.