Sayyidah Aishah Siddiqah (may Allah be pleased with her) said: The Prophet (peace and blessings be upon him) used to wear a ring on his blessed right hand, and when he passed away it was on his blessed right hand.
Al-Bazzar recorded it; its chain contains Ubayd bin al-Qasim, who is matruk (abandoned).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب اللباس / 8730