Be fair & just when it comes to matters of marriage & other decisions; Consider what is best for all parties involved before making any decision; Strive for justice & fairness in all matters related to family life such as marriage

This hadith speaks about a practice known as Ash-Shighar, which was forbidden by the Prophet Muhammad. This practice involves a man giving away his daughter in marriage on the condition that another man will give him his sister in return. This type of exchange was seen as unfair and unjust, and so it was prohibited by the Prophet Muhammad. It teaches us to be fair and just when it comes to matters of marriage, and not to take advantage of others for our own benefit. We should also strive to ensure that all parties involved are treated fairly and with respect when making decisions about marriage or any other matter.

The Prophet Muhammad also taught us that we should not make decisions based solely on our own desires or interests; rather, we should consider what is best for all parties involved before making any decision. We must always strive for justice and fairness in all matters, especially those related to family life such as marriage.