"Fadlallah ibn Ahmad ibn Muhammad ibn Ibrahim" whom we know as "Abu Sa'id Abu al-Khair", on the first day of Muharram in the month 357 AH in "Mihaneh" in the area between Abyvard and Sarakhs in Khorasan. Bozad was born today, except for Turkmenistan.
His father was Attar and had a mystical passion for traveling to Sufi gatherings and taking the boy with him. The nickname "Abu al-Khair" is the father's legacy for the son.
Fazlullah began his education in the same city as his hometown, where he attended a great school in adolescence and middle age in various cities, including Merv and Sarakhs, and taught Shafi'i jurisprudence, hadith and tradition. He had more meetings with the elders of Sofia, and went to them, and made an old disciple of the Tariqat.
At the age of fifty he settled in Neyshabur and gradually grew up to become one of the Sufi poles.
There are many anecdotes and superstitions about "Abu Sa'id Abu al-Khair". Including the ending of the Quran every night while hanging low in the well, or meeting with Bu Ali Sina and meeting and discussing it several nights.
Abu Sa'id returned to his hometown in the final years of his life, and died in his fourth Sha'ban, AH, when he had lived for more than eighty years, and his body was buried in his home.