(1) That is to say: “I clipped,” with the consonant sad turned into a ya because sad is heavy on the tongue. Al-Lisan explains: qassa al-shaʿr wa-l-suf wa-l-ẓufr yaqussu qassan, and qasastu / qasaytu after the consonantal change. Similar shifts are found in tazannaytu (from tazannantu), taqadda (from taqaddad), dinar (from danar), and labba (from labb). See al-Fakhir by al-Mufaddal ibn Salama, pp. 4–5. (2) Tarikh Baghdad, 14/45–46; Muʿjam al-Udabaʾ, 19/288. (3) This is the sole source on which specialists in genealogy rely. Only a small fragment of thirteen folios has survived, and, as far as we know, no complete copy has been found. Yaqut al-Hamawi produced an abridgement in 167 folios and noted at its end that he finished it on 20 Dhu al-Hijja 606/1209. We possess a photographic copy taken from a manuscript transcribed from the author’s own exemplar; the scribe states that he completed it in 665/1267. This copy is exceptionally valuable and accurately checked. (4) He also composed Kitab al-Asnam (The Idols) and Nasab al-Khayl (The Genealogy of Horses), both printed in Cairo under the editorship of Ahmad Zaki. (5) Ibn al-Nadim lists these works in al-Fihrist, pp. 108–111, bringing the total to 144 titles. (6) His biography appeared in volume 6 of the present work, p. 248. Ibn Kathir states in Ikhtisar ʿUlum al-Hadith, p. 209, in the forty-eighth section on individuals with multiple names: “Among them is Muhammad ibn al-Saʾib al-Kalbi: some transmit him under this name, others call him Hammad ibn al-Saʾib; some use the kunya Abu al-Nadr, and others Abu Saʿid.” Ibn al-Salah adds that this is the transmitter from whom ʿAtiyya al-ʿAwfi relates his tafsir, suggesting—wrongly—that he is Abu Saʿid al-Khudri.