Act with justice and fairness towards others.

This hadith teaches us that no one should be killed unjustly. The Prophet Muhammad said that if someone is killed unjustly, the first son of Adam will have a part of its burden. This means that even though we may not suffer the consequences for our wrongdoings in this life, we will still be held accountable for them in the afterlife. We must remember to always act with justice and fairness towards others so as to avoid any negative repercussions in our lives or after death. Furthermore, this hadith also warns us against establishing traditions which involve murdering or killing people without just cause as it is an injustice which cannot go unpunished.