Ask questions when you don't understand something; Seek knowledge; Make informed decisions; Follow correct advice given by knowledgeable people; Don't rely on guesswork or other people's opinions without questioning them first.

This hadith is about the importance of asking questions and seeking knowledge when one does not know something. It tells us that ignorance can be cured by inquiry, which means to ask questions and seek knowledge. The story in this hadith is about a man who was injured on a journey and asked his fellow travelers if he could perform tayammum instead of taking a bath, but they said no. He then took a bath and died because he did not have enough knowledge to make an informed decision. The Prophet then said that they should have asked if they did not know what to do, instead of giving him wrong advice which led to his death. This teaches us that it is important to ask questions when we don't know something so we can make informed decisions, rather than relying on guesswork or other people's opinions which may be wrong or misguided.