They claim their lineage to Ahmad al-Muhajir who was born in 873 (260H), who emigrated from Basra to Hadhramaut[1] in 931 (320H) to avoid sectarian violence, including the invasion of the Qaramite forces into the Abbasid Caliphate.

[2] According to the Ba 'Alawi side, their claim is accepted by virtually all Niqaba of Muslim countries, notably in Yemen, the Levant, the Maghreb, Iran and the Middle East.

Great classical scholars of Islam such as Ibn Hajar al-Haitami or Murtada Al Zabidi have validated the Nasab of the Ba Alawi Sada.

The founder of their order was Muhammad bin Ali Baalawi, known as "Al-Faqih Al-Muqaddam", whom during his time, Sayyid families in Hadhramaut were seen as a threat by other tribes.

[5] It is believed the dissemination of Islam in Southeast Asia was carried out by traders and clerics of Hadhramaut who transited in India since 15th century as the Sufism and its influences can be traced strongly in the region.

It was only since 1700 AD they began to migrate[10] in large numbers out of Hadhramaut across all over the globe, often to practice da'wah (Islamic missionary work).

[15][16][17][18][2][better source needed][dubious – discuss] The genealogies of the Ba Alawids were preserved in a large general tree located in fifteen volumes, compiled by the famous genealogist Abd al-Rahman al-Mashhur, author of "Shams al-Dhahira"(1340 Hijri), which was the approved tree, and is still recorded to this day in the Hejaz, Yemen, southeast Asian countries and east Africa, and its original was preserved in Tarim in Hadhramaut, and was adopted by the Association of Alawite Masters in Jakarta, Indonesia.

[19] some of the notable books that records their genealogy are:[20] After the descendants of al-Muhajir settled in Tarim, some governors asked them to prove their lineage to confirm what they claimed, and that this should be done by a judicial ruling, and Tarim had three hundred muftis at that time, so Ali bin Muhammad bin Jadid, who died in 620 AH, traveled to Iraq and proved the lineage to the judge there and witnessed it.

Al-Muhajir's children and grandchildren invested in Hadramawt for many years from the proceeds of their money in Iraq, so they were in contact with their ancestral homeland and their cousins there, and they had their news and those who came from there reminded them of their biography and history.

In 2000, FamilyTreeDNA was established and initiated a global project to identify human origins through DNA analysis with the aim of reconnecting the Jewish diaspora around the world.

When members of the Ba Alawi performed this genetic analysis, their results showed the haplogroup G lineage, which is predominantly found in the Caucasus.

Some authoritative Muslim scholars such as former Mufti of Egypt Shaikh Ali Jum'ah,[38] Sayyid Usamah Al-Azhari of Al-Azhar University in Egypt,[39] Iranian Ayatollah Sayyid Mahdi Rajai,[40][41] and Saudi Arabian genealogist Sharif Anas bin Yaqub Al-Kutaby,[42] have asserted their opinion that Ba 'Alawi sada family lineage is connected to Muhammad.

[51] Furthermore, their argument is also based on the results of Y-DNA tests conducted on 130 samples of individuals who claimed of the Ba Alawi clan,[52] which do not show any correspondence with the haplogroup of the Banu Quraysh.

A recent finding of the manuscript of Imam Tirmidhi written in around 589 H, hence a contemporary book debunking the deniers' claim, mentioned a person named Muhammad Sahib Mirbath from Ba'alawi family.

[65][66] A Genealogy scholar in 8th Hijri, Bahaudin Al-Janadi in his book, "As-Suluk Fi Tabaqatil Ulama Wal Muluk"[67] said: Among them (Bait Abi Alawi) is Hasan bin Muhammad bin Ali Ba 'Alawi (who belongs to the Alawi lineage), he is a jurist who memorizes outside the head of the Al-Wajiz book is imam Ghazali" (volume 2, page 463).There is no consensus among scholars regarding the use of DNA testing to trace distant lineage.