What further evidence does Muslim invoke for the two chains through ʿAbd Allāh ibn Yazīd?

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

• No later hadith expert ever used them
• Every link is explicitly and multiply reported with ḥaddathanā
• Their wording is free of all route variation
• Critics known to Muslim regarded them as strong and used them as evidence