Ibn Isḥāq said:
Kʿab ibn Luʾayy fathered three sons—Murrah, Huṣayṣ, and ʿAdiyy (1). Murrah in turn begot three sons as well: Kilāb ibn Murrah, Taym ibn Murrah, and Yaqaẓah ibn Murrah, each from a different mother.

He continued:
Kilāb fathered two sons: Quṣayy ibn Kilāb and Zuhrah ibn Kilāb. Their mother was Fāṭimah bint Saʿd ibn Sayal, one of the Jadarah from Juʿthamah al-Asad of Yemen, allies of Banū al-Dayl ibn Bakr ibn ʿAbd Manāh ibn Kinānah.

Concerning her father, a poet said:
“We have never seen among mankind a single figure
whom we have known to rival Saʿd ibn Sayal;
A horseman, steady-handed though hardship beset him,
who, when he faced a foe, would dismount; (2)
A rider who would draw the horses on
as the blazing heat lures the partridge to the stones.” (3)

Al-Suhaylī remarked: “Sayal’s given name was Khayr ibn Ḥamālah; he was the first for whom swords were plated with gold and silver.” (4)

Ibn Isḥāq went on: They were called Jadarah because ʿĀmir ibn ʿAmr ibn Khuzaymah ibn Juʿthamah married the daughter of al-Ḥārith ibn Muḍāḍ al-Jurhumī, at a time when Jurhum were custodians of the House. He built a wall for the Kaʿbah, and because of that wall ʿĀmir was given the epithet Jadrah; hence his descendants were called al-Jadarah.

The story of Quṣayy ibn Kilāb: how he regained custody of the House for Quraysh, wrested it from Khuzaʿah, and gathered Quraysh around the Sacred Precinct—which Allah made a sanctuary for His servants—after they had been scattered throughout the land and dispersed among mountains and valleys (5).

When his father Kilāb died, Quṣayy’s mother married Rabīʿah ibn Ḥarām of ʿUḍrah, who took her and her son to his homeland. Later, while still a young man, Quṣayy returned to Mecca and married Hubbā, daughter of the chief of Khuzaʿah, Ḥulayl ibn Ḥubshiyyah. The Khuzaʿah maintain (6) that Ḥulayl bequeathed custodianship of the House to Quṣayy when he saw the many children born to him through his daughter, saying, “You are more entitled to this than I.” (7)