Follow teachings & instructions given by Prophet Muhammad .

This hadith is about a man named Maymun ibn Mahran who was sent by his tribe to perform umrah, but when he reached Syria, he was stopped from entering Mecca. He then sacrificed his animal and returned home. The following year, he asked Ibn Abbas what he should do and Ibn Abbas told him that according to Prophet Muhammad's instructions, one must bring a new sacrificial animal for an atonement if they have already sacrificed their animal outside of Mecca. This hadith teaches us that we must always follow the teachings and instructions given by Prophet Muhammad as it will lead us on a righteous path. It also teaches us that even if we make mistakes or are unable to fulfill our obligations due to certain circumstances, we can still make up for it with sincere repentance and dedication towards fulfilling our obligations properly next time around.