Narrated Hammad bin Salamah: "I saw Ibn Rafi' and he is 'Ubaidullah bin Abi Rafi', the freed slave of the Messenger of Allah ﷺ - and Aslam was the name of Ibn Abi Rafi wearing a ring on his right, so I asked him about that. He said, 'I saw 'Abdullah bin Ja'far wearing a ring on his right hand, and he 'Abdullah bin Ja'far said: "The Messenger of Allah ﷺ wore a ring on his right hand". He said: Muhammad bin Isma'il said: "This is the most correct thing related from the Prophet ﷺ on this topic".
The hadith also teaches us the importance of passing down knowledge from one generation to another; Ibn Rafi learned from Abdullah bin Ja'far who learned from the Prophet Muhammad himself (PBUH). We can learn many lessons from this hadith such as respecting our elders, learning from their wisdom, and passing down knowledge for future generations.