Methods For Establishing Lineage (Nasab)
Book Title: Measuring the Authenticity of Habib Lineage in Indonesia
Author: KH Imaduddin Utsman Al Bantani, leader of Nahdlatul Ulum Islamic Boarding School, Banten
First Edition: October 2022
Publisher: Maktabah Nahdatul Ulum
Translator: alkhoirot.org | Al-Khoirot Research and Publication
Field of Study: Islamic History, genealogy
Contents
- Methods For Establishing Lineage (Nasab)
- Back to Book Measuring the Authenticity of Habib Lineage in Indonesia
METHODS FOR ESTABLISHING LINEAGE (NASAB)
Genealogists employ specific methods to establish the lineage of an individual or a particular family community to their claimed ancestors. For example, if someone claims to be a 40th-generation descendant of Prophet Muhammad s.a.w. through Alawi bin Ubaidillah "ibn" Ahmad bin Isa, and provides a sequence of 40 names from themselves back to the Prophet, there are two primary ways to confirm its authenticity: looking up and looking down.
Looking Up
"Looking up," or researching upward, involves confirming the names mentioned starting from the person being studied up to Prophet Muhammad s.a.w.
- For the first, second, and third names, confirmation can be made through the closest family members on the father's side, such as uncles, to verify if the individual is indeed the child of their father and if the father is truly the child of the grandfather.
- For the fourth name and beyond, confirmation is sought through the genealogical records of the great-grandparents' family.
- These records are then synchronized with the records of the broader extended family of those great-grandparents through their other children (the siblings of the grandfather). This process continues upward accordingly.
Looking Down
"Looking down" refers to researching from the top—in this case, starting from Prophet Muhammad s.a.w. and moving downward through the generations. This involves finding sanad (chains of transmission) and evidence (dalil) for each link:
- Evidence that Prophet Muhammad s.a.w. had a child named Siti Fatimah r.a.
- Evidence that Siti Fatimah had a child named Husain.
- Evidence that Husain had a child named Ali Zainal Abidin.
- Evidence that Ali Zainal Abidin had a child named Muhammad al-Baqir.
- Evidence that Muhammad al-Baqir had a child named Ja'far al-Sadiq.
- Evidence that Ja'far al-Sadiq had a child named Ali al-Uraidhi.
- Evidence that Ali al-Uraidhi had a child named Muhammad an-Naqib.
- Evidence that Muhammad an-Naqib had a child named Isa al-Rumi.
- Evidence that Isa al-Rumi had a child named Ahmad al-Muhajir.
- Evidence that Ahmad al-Muhajir had a child named Ubaidillah.
- Evidence that Ubaidillah had a child named Alawi, and so forth as shown in the image below.
To find this evidence, the lineage from Prophet Muhammad s.a.w. down to Ali al-Uraidhi is very well-known (masyhur) through hadith. However, for the generation of Ali al-Uraidhi's son, Muhammad an-Naqib, the reliance shifts solely to lineage books (kitab-kitab nasab).[]