Seek knowledge from reliable sources, Respect those more knowledgeable than oneself

Umm al-Fadl was one of the companions of the Prophet Muhammad ﷺ. She reported that some people among the companions were in doubt about fasting on the day of 'Arafa. To remove their doubts, she sent a cup of milk to him while he was halting at 'Arafa and he drank it. This action showed them that it is permissible to not fast on this day if one wishes to do so. This hadith teaches us that we should always seek knowledge from reliable sources and not rely solely on our own opinions or assumptions when it comes to religious matters as they can lead us astray from what is right and true. It also teaches us that we should be respectful towards those who are more knowledgeable than us in religious matters as they can help guide us in our faith journey.