Fulfill religious obligations

This hadith is about the importance of completing one's fast and making atonement for it. It was narrated by AbdurRahman ibn Maslamah on the authority of his uncle that when people from the tribe Aslam came to visit the Prophet, he asked them if they had fasted on that day. When they replied in negative, he advised them to complete their fast and make atonement for it. This hadith teaches us that we should always strive to fulfill our religious obligations even if we have missed some part of it due to any reason. We should also seek forgiveness from Allah for any shortcomings in fulfilling our religious duties.