Abū Masʿūd al-Anṣārī is called “al-Badrī.” Which statement reflects the historical disagreement about his participation at Badr?

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

• All historians agree he fought at Badr; there is no disagreement
• The majority deny his participation, while al-Zuhrī, al-Ḥakam, Ibn Isḥāq and al-Bukhārī are cited for participation
• The epithet alone proves participation, making contrary reports irrelevant
• Abū Masʿūd’s name is unknown, so the issue cannot be assessed