LessonsReports of ʿAmr ibn ʿUbayd: Attribution, Conflicting Accounts and Evidence of CriticismQuiz

The insertion «qāla Abū Isḥāq ... wa-ḥaddathanā Muḥammad b. Yaḥyā» signals a second upper route, not part of the critical remark itself. Both routes converge at Nuʿaym b. Ḥammād; below him the route through Abū Dāwūd, Shuʿbah and Yūnus is shared.

A chain must retain who uttered each transmission formula and where an additional route enters. Combining the two upper paths into an undifferentiated single chain would erase important transmission history.

Al-Nawawī identifies Abū Isḥāq Ibrāhīm b. Muḥammad b. Sufyān as Muslim’s student and a transmitter of Ṣaḥīḥ Muslim from him. Thus «وَحَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى» introduces Abū Isḥāq’s own additional upper route; it must not be inserted as a link inside Muslim’s first chain.

Al-Nawawī notes that this insertion occurs in many collated manuscript copies but is absent from some. Here Abū Isḥāq transmits from Muḥammad b. Yaḥyā without passing through Muslim. Al-Nawawī describes the benefit in terms of matching Muslim’s chain level and obtaining one-link ʿulūw (a higher route). Both paths still converge at Nuʿaym b. Ḥammād; the insertion is not a second independent critical statement by Yūnus b. ʿUbayd.

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Two upper routes in one report

Reports of ʿAmr ibn ʿUbayd: Attribution, Conflicting Accounts and Evidence of Criticism

The insertion «qāla Abū Isḥāq ... wa-ḥaddathanā Muḥammad b. Yaḥyā» signals a second upper route, not part of the critical remark itself. Both routes converge at Nuʿaym b. Ḥammād; below him the route through Abū Dāwūd, Shuʿbah and Yūnus is shared.

A chain must retain who uttered each transmission formula and where an additional route enters. Combining the two upper paths into an undifferentiated single chain would erase important transmission history.

Al-Nawawī identifies Abū Isḥāq Ibrāhīm b. Muḥammad b. Sufyān as Muslim’s student and a transmitter of Ṣaḥīḥ Muslim from him. Thus «وَحَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى» introduces Abū Isḥāq’s own additional upper route; it must not be inserted as a link inside Muslim’s first chain.

Al-Nawawī notes that this insertion occurs in many collated manuscript copies but is absent from some. Here Abū Isḥāq transmits from Muḥammad b. Yaḥyā without passing through Muslim. Al-Nawawī describes the benefit in terms of matching Muslim’s chain level and obtaining one-link ʿulūw (a higher route). Both paths still converge at Nuʿaym b. Ḥammād; the insertion is not a second independent critical statement by Yūnus b. ʿUbayd.