The chapter that follows it. The chapter on "The Discipline of the Servant." This means disciplining the servant. It is narrated with a good chain of transmission.

The Shaykh : The chapter that follows it. The chapter on "The Discipline of the Servant." This means disciplining the servant. It is narrated with a good chain of transmission. From Yazid ibn 'Abd Allah ibn Qusayt, who said: "'Abd Allah ibn 'Umar sent his slave with gold or silver—meaning silver—to exchange it, so he exchanged it, and he deferred the exchange"; that is, he exchanged it for a deferred period, and that is forbidden. He is referring here to the saying of the Messenger (peace be upon him) This means that if one wants to exchange gold for gold, there must first be no excess in the amount. Likewise, there must be no excess in silver. For example, it is not permissible to exchange ten silver pounds for ten shayf, where each shayf is a pound. It is not permissible to take an increase from the excess. For instance, if I need the excess, and I give ten silver pounds, and he gives me ten pounds minus a quarter pound as the excess, this is not permissible by the Shari'ah. Likewise, if I want to exchange these ten pounds of stone for quarters or halves of equal value, it is not permissible to defer it, even if it is equal. Now, if I exchange the ten pounds and receive the excess in the amount of their value, it is not permissible as a loan. If the money changer says, "Come back to me and take the change, take the exchange," it is not allowed except hand-to-hand and like-for-like, otherwise it will be riba. Where is the riba here? One of the parties benefits from the exchange until he delivers it, so there is riba. So 'Abd Allah ibn 'Umar ibn al-Khattab "sent his servant to exchange for him gold or silver, meaning silver, so he exchanged it, and he deferred the exchange," meaning he deferred it when he exchanged it. "So the slave returned to his master, 'Abd Allah ibn 'Umar, and he beat him a painful beating, striking him a painful strike, and said: 'Go and take what is mine and do not exchange it';" meaning, what I gave you on the basis that you would receive it later, go back and bring it to me; because this is not permissible in Islam.
The point of interest: That Ibn 'Umar beat his servant here, so we benefit from this report, and Ibn 'Umar is one of the famous Companions of the Messenger, that it is permissible for the master to beat his servant or slave rightfully, as 'Abd Allah ibn 'Umar did here with his servant when he committed a violation of the Shari'ah, which was that he deferred the exchange. In the exchange, he gave the one who wanted to exchange it, and said to him: "I will come back to you and take what?" The exchange, immediately. When he came to Ibn 'Umar and told him, "I did such and such," he beat him a painful beating, and said to him: "Go back and run, and go get me the money, the gold or the silver." So we benefit from this that it is permissible for the master to beat his slave or servant if he commits a violation of the Shari'ah.