Be honest and just in dealings with others even if it means sacrificing one's own financial gain .

The Prophet Muhammad taught us that it is not permissible to take payment for covering a stallion. This hadith serves as an example of the Prophet's teachings on economic justice and fairness, as he was against any form of exploitation or unfairness in business transactions. He wanted to ensure that people were not taken advantage of, and that everyone was treated fairly when engaging in business activities. This hadith also teaches us the importance of being honest and just in our dealings with others, even if it means sacrificing our own financial gain.