Hacham Eliyahu Ben Harosh was born to Esther Niddam and Abraham Harosh circa 1817 in Sefrou, Morocco. He studied Torah with Hacham Yehoshua Israel Yaakov Ben Ouliel.
In 1837, Hacham Eliyahu Ben Harosh married Mas'ouda, his teacher's granddaughter, and the couple had four daughters.
Hacham Eliyahu Ben Eliyahu was a person of great humility who devoted his time entirely to
Torah study and was famous for his sermons and poetry.
Hacham Eliyahu Ben Eliyahu passed away on 13 Sivan, 5643 (1883). He authored two books: Birkat Eliyahu – original commentary on the Bible, and Kos Eliyahu – a commentary on the Passover Haggadah.