Muhammad ibn ʿAbd al-ʿAzīz al-Hāshimī said: Sulaymān ibn al-Ashʿath ibn Bishr ibn Shaddād (1).

Al-Azdī: a nisba referring to al-Azd ibn al-Ghawth ibn Nabt ibn Mālik ibn Zayd ibn Kahlān ibn Sabaʾ ibn Yashjub ibn Yaʿrub ibn Qaḥṭān, who was the ancestor of a tribe in Yemen (2).

Al-Sijistānī: a nisba referring to Sijistān, with kasra on the unpointed sīn and on the jīm, and sukūn on the second sīn, followed by a tāʾ dotted with two dots above: it is a region located now approximately in the south and southwest of Afghanistan, extending into some areas of eastern Iran to its south. It includes the delta of the Helmand River and other numerous rivers descending from the towering mountains of Afghanistan above Kabul and Ghazna toward the southwest, and in this location is the city of Qandahār (3).

This region is also called Sīstān, which goes back to its Persian name: Sakastān. It is now known as Sīstān, and in Persian it is also called Nīmrūz, meaning "half day," or "the southern land." It is said that this region was only so named because of its location south of Khurāsān (4).

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(1) The two previously cited references.
(2) Ibn al-Kalbī in "Jamharat al-Nasab" 2/363, Ibn Ḥazm in "Jamharat Ansāb al-ʿArab" p. 330, al-Samʿānī 1/197, Ibn al-Athīr in "al-Lubāb fī Tahdhīb al-Ansāb" 1/46, and Muḥammad ibn Jaʿfar al-Kattānī in (al-Risāla al-Mustatrafa) p. 11.
(3) G. Le Strange in "The Lands of the Eastern Caliphate" pp. 20 and 372.
(4) Ṣiddīq Ḥasan Khān in "al-Ḥiṭṭa" p. 449, and G. Le Strange in (The Lands of the Eastern Caliphate) p. 372.