He lived his entire life in the town of Tarim in Yemen's Valley of Hadhramawt and died there in 1720 CE (1132 Hijri).
Despite being a major source of reference among the Sunni Muslims (especially among Sufis), only recently have his books began to receive attention and publication in the English-speaking world.
Their appeal lies in the concise way in which the essential pillars of Islamic belief, practice, and spirituality have been streamlined and explained efficiently enough for the modern reader.
Abd Allah (or Abdullah) was born on Sunday night, 5th Safar, 1044 AH (1634 CE) in al-Subayr, a village on the outskirts of Tarim in Hadhramawt.
“In my childhood,” he testifies, “I was never treated like one who didn’t see, neither in walking nor in playing.” From a young age, he was trained as a religious scholar as he was given to very intense worship and spiritual struggle as a child.
He also chose the ascetic path, "In the beginning, I spent a long period subsisting on coarse food and wearing rough clothes.” Imam al-Haddad would perform recitation a quarter juz (portion) of the Quran practice alone in his youth, prior to the age of 17 in the desert canyons around Tarim.
Among the nicknames of Imam al-Haddad was the axis of invitation and spiritual guidance (Al-Qutb At Dawati wal Irshaad).
al-Habib Ahmad bin Zayn al-Habshi became Imam al-Haddad’s successor in leading the Sufism after his death.
Among the books he taught was Awaarif al-Ma’arif which is a classical work in tasawwuf by Abu Hafs Umar al-Suhrawardi.
He spent most of his life in Hadhramawt where he taught Islamic jurisprudence and classical Sufism according to the Ba 'Alawiyya Sufi order (tariqa).
Furthermore, he does not bring up legal rulings (ahkam fiqhiyya), which would necessitate that his readership be limited to the adherents of his school of law (Shafi'i).
"Yaqin" is attained by proper practice of the "Sunnah" in fulfilling obligatory worships and avoiding prohibitions along with sincerity and truthfulness to God.
As a Sayyid, his sanctity and direct experience of God are clearly reflected in his writings, which include several books, a collection of Sufi letters, and a volume of mystical poetry.
During his life, the British were already accustomed to trade in Yemen, and the Portuguese had captured the island of Socotra, 350 km off the coast.