Stand up for loved ones when they are being criticized; show respect towards elders; be loyal towards family members/friends/colleagues etc.; defend against criticism/hatred etc.; show kindness towards others etc..

This hadith speaks of the importance of defending those who are close to us, even if they are criticized by others. The Prophet Muhammad (PBUH) was very fond of Usama bin Zaid and his father, so when people spoke badly of Usama's leadership, he defended him with great passion. He reminded them that they had also criticized Zaid's leadership in the past, but that he was one of the most beloved persons to him. He then went on to say that now Usama is one of the dearest persons to him after his father. This shows us how important it is to stand up for those we love and care about, even if others criticize them or their actions. It also teaches us how much respect we should have for our elders and those who have come before us - just as the Prophet Muhammad (PBUH) respected Zaid despite any criticism he may have received from others.