Trust narrations from reliable sources with multiple chains of transmission .

This hadith is about the authority of 'Ubaidullah, who was a companion to Prophet Muhammad (peace be upon him). It also mentions two chains of transmitters, which are known as tawatur in Arabic. Tawatur refers to a narration that has been reported by multiple people in multiple ways, making it reliable and trustworthy. The hadith teaches us that we should always trust narrations from reliable sources, such as those with multiple chains of transmission. We should also be careful when accepting narrations from unreliable sources or single-chain transmissions.