Make sure all parties involved in a sale/transaction are aware and knowledgeable about what they are buying/selling before proceeding with any kind of agreement.

The hadith narrated by Jabir bin Abdullah states that the Prophet Muhammad prohibited certain types of sales and transactions, such as Al-Muhaqalah, Al-Muzabanah, and Al-Mukhabarah. These terms refer to different kinds of sales or transactions in which one party is not fully aware of the details or conditions involved. For example, if a person sells something without knowing its exact value or quality, this would be considered an example of Al-Muhaqalah. Similarly, if a person buys something without knowing its exact value or quality, this would be considered an example of Al-Muzabanah. In both cases, it is important for both parties to be knowledgeable about the details involved in order for the sale or transaction to be valid according to Islamic law. Therefore, it is important for people engaging in any kind of sale or transaction to make sure that all parties involved are fully aware and knowledgeable about what they are buying/selling before proceeding with any kind of agreement.