Banū Rāsib
A name the genealogists record twice over — once in the Azd and once in Quḍāʿah — and keep apart.
- Recorded twice
- A Rāsib in al-Azd and a Rāsib in Quḍāʿah — kept apart by the genealogists
- Nisba
- al-Rāsibī — the same word for both
- Recorded in
- ʿUmān and Baṣra (the Azdī bearer)
- Name
- Root r-s-b — to sink and settle, to be fixed
- Scope
- Historical — no modern attribution
Overview
Rāsib is a name the classical genealogists record in two separate places: a Rāsib reckoned to al-Azd, and another reckoned to Quḍāʿah. They keep the two apart, and the distinction is the most useful thing this page carries, because the nisba al-Rāsibī is the same word in both cases. The Azdī Rāsib is named in the Azdī chapters and among the groups recorded in ʿUmān and afterwards in Baṣra. This page describes historical groups and makes no claim about any modern family.
Two Rāsibs, one nisba
When a source says al-Rāsibī without qualification, it has not told the reader which of the two lines it means, and the answer usually has to be argued from the context — the man's city, his associates, the tribe of those he is grouped with — rather than read off the name. Quḍāʿah is itself the group whose branch the genealogists never settled, which compounds the problem: an attribution to Rāsib of Quḍāʿah does not even fix the ʿAdnānī or Qaḥṭānī side. The reference records both bearers and resolves neither.
The name
The lexicographers refer the word to the root r-s-b: rasaba is to sink and come to rest at the bottom of water, and the rāsib is what settles and stays fixed. From the same root they record Rasūb as the name of a celebrated sword, a sense worth mentioning only to show how wide the derivations run. The dictionaries give the meaning of the word, not a reason for the name.
On lineage
Branch lists and affiliations here are given as reported by the classical genealogists, who themselves disagree. Nothing on this page establishes any living family's descent: a shared name may reflect descent, alliance (ḥilf) or clientage (walāʾ), and the sources usually say which only when they know.
Frequently asked questions
Does al-Rāsibī mean Azdī?
Not on its own. The genealogists record a Rāsib in the Azd and another in Quḍāʿah, and the nisba is identical for both. Which is meant has to be argued from the passage.
Why does the Quḍāʿī option complicate things further?
Because the sources never settled whether Quḍāʿah itself belongs on the ʿAdnānī or the Qaḥṭānī side, so that attribution leaves even the branch open.
Sources
- ابن حزم الأندلسي، جمهرة أنساب العرب، 456هـ — في أنساب الأزد وقضاعة
- ابن منظور، لسان العرب، 711هـ — مادة (ر س ب)
- القلقشندي، نهاية الأرب في معرفة أنساب العرب، 821هـ — باب الأزد وباب قضاعة
This page is an educational, historical reference compiled from published sources. It is not an authority on lineage. Where sources differ, we report the difference without taking a position. Corrections are welcome via our contact page.
Last reviewed: 2026-09-07