Who is “Abī Bakrah” in Ribʿī ibn Ḥirāsh’s transmission?

Historical Examples of Muʿanʿan Transmission and the Conclusion of Muslim’s Introduction

• The Companion Abū Bakrah, distinct from Abū Bakr al-Ṣiddīq
• Abū Bakr al-Ṣiddīq
• Abū Maʿmar ʿAbd Allāh ibn Sakhbarah
• Ubayy ibn Kaʿb