Respect other's opinions, Be mindful towards one's actions & strive for unity & understanding between differing views/opinions

This hadith discusses the permissibility of having four people in a gathering. The hadith was narrated by Ibn 'Umar and Abu Salih, who both reported that it does not harm you to have four people in a gathering. This suggests that although it is not necessary to have four people, it is still permissible and allowed. This hadith teaches us the importance of being mindful of our actions and understanding what we are allowed or prohibited from doing according to Islamic teachings. We should always strive to be aware of our actions so as not to do anything that goes against Islamic teachings or beliefs. Additionally, this hadith also teaches us the importance of respecting other's opinions even if they differ from ours; we should always strive for unity and understanding when engaging with others who may hold different views than ours.