Be mindful of your actions; Do good deeds with sincerity; Put your trust in Allah alone; Take life seriously .

The Prophet Muhammad was encouraging his followers to take life seriously and be mindful of their actions. He said that if they knew what he knew, they would weep much and laugh little. This suggests that the Prophet had a deep understanding of the consequences of our actions in this world and the next. He wanted us to understand that we should not take our lives for granted or act frivolously as it can have serious repercussions in both worlds. We should strive to live a life full of good deeds so that we can reap its rewards in the hereafter.

The Prophet also wanted us to remember Allah often and put our trust in Him alone as He is the only one who knows what lies ahead for us all. We should strive to do good deeds with sincerity so that Allah will accept them from us on Judgment Day. By doing this, we can ensure a better future for ourselves both here on earth and in the hereafter.