Here are entered works on families with the surnames: Song, Sŏng.When this heading is assigned to works on an individual family, the appropriate diacritical marks, if any, are included in the heading in the catalog record.
Here are entered works on the oral traditions concerning the deeds and sayings of Muḥammad, the prophet, solely. Works on the oral traditions concerning the deeds and sayings of Imams and Muḥammad, the prophet, are entered under Hadith (Shiites). Works on the traditions of individual Imams are entered under the name of the Imam with subdivision Hadith.
