"And give to the orphans their property," meaning: when they reach maturity. "And do not substitute the defective for the good," Al-Hasan said: The defective is consuming the wealth of orphans unjustly, and the good is that which Allah has provided for you. He is saying: Do not abandon the good and consume the defective. "And do not consume their wealth into your wealth," meaning: along with your wealth. "Indeed, that is ever a great sin [hūban kabīran]," meaning: a sin.
Muhammad said: There is another dialect for it: hawban, with a fathah on the letter ha, and it has been recited that way.