Follow Prophet Muhammad's teachings in religious matters and pray witr with at least three rakas.

This hadith talks about the prayer of witr which is a special prayer that Muslims perform after Isha. It is usually performed with three rakas but according to this hadith Sad ibn Abi Waqqas used to pray it with one raka. However Malik said that three was the minimum for witr and this is what Muslims follow today. This hadith teaches us that we should always follow the teachings of Prophet Muhammad ﷺ and not just rely on our own opinions or ideas when it comes to religious matters.