Remain hopeful even during times of loss or tragedy; show gratitude towards those who have sacrificed themselves for others; remember true heroes forever.

This hadith speaks about the martyrdom of three companions, Zaid, Ja'far and Ibn Rawaha. The Prophet Muhammad ﷺ was informed about their death before news reached him, which caused him to shed tears for them. He then said that after their deaths, a Sword amongst the Swords of Allah took up their flag and led to victory for Muslims. This hadith teaches us that even in times when we are faced with loss or tragedy, we should remain hopeful as God will always provide us with help in our time of need. It also teaches us to be grateful for those who have sacrificed themselves in order to bring victory or success to others; these people are true heroes who should be remembered forever.