For collections, Musnad has another use: reports are grouped under the Companion who narrates them. The Companions may be ordered by precedence in merit, earlier acceptance of Islam, or alphabetically.
Examples: Musnad Aḥmad, Musnad Abī Dāwūd al-Ṭayālisī, and Musnad al-Ḥumaydī.
This describes a book's arrangement, distinct from the chain-and-attribution definition of an individual report.