To whom do the yield and separable increase of the sold item belong during the option period?

Primary text

The yield and separable increase of the sold item during the option period belong to the buyer, irrespective of whether the contract is ratified or rescinded. Ahmad stated that if a person buys a slave who is gifted money before separation, and then the seller chooses to revoke the sale, the money belongs to the buyer. Al-Shafi'i holds that if the contract is ratified and ownership is held by the buyer or suspended, the separable increase belongs to the buyer; however, if ownership is held by the seller, the increase belongs to the seller. The primary evidence supporting the buyer's right is the Prophetic tradition: 'The yield belongs to the guarantor' (Al-Kharaj bi al-Daman), which Al-Tirmidhi authenticated as sound. This situation is considered part of the buyer's guarantee, thus the yield must be his. Furthermore, ownership transfers upon sale as established, so the increase should belong to the buyer, similar to the period after the option expires.