Selling bad meat for good meat with a difference in quantity

Question:
And I prayed for the Shaykh. May Allah reward you. What is the ruling if someone sells to another person bad meat for two kilos of good meat?

Answer:
This is not permissible; it is riba (usury or interest). This is because meat is weighed and eaten, and the operative cause and the single genus are present in it; it is all one genus, namely meat. Welcome. Even if the type of animal differs, it is all meat, just as if the types of dates differ, a difference in quantity is not permissible, or if the types of grains differ, a difference in quantity is not permissible, because the genus is one. A genus encompasses various types; this is the genus; a genus encompasses various types. For example, dates are a genus; the word "dates" is this genus, and under it fall types of dates that only Allah knows, all of which are one genus, and a difference in quantity is not permissible among them. Yes.