What does the second clause do in “Amaddakum bimā taʿlamūn; amaddakum bi-anʿāmin wa-banīn”?

Al-Faṣl: Separation of Clauses and Its Rhetorical Grounds

• Unpacks the general description of blessings
• Negates the earlier claim
• Asks an unrelated question
• Deletes the subject