Caliph Al-Hasan ibn ‘Ali is the grandson of which Islamic prophet?
Mujtaba Al-Mujtaba (Arabic: اَلْـمُـجْـتَـبَى‎ ‎ ) is an Arabic word which means "The Selected One" or "The Chosen One among many." It is a title of the Islamic "Nabi" (Arabic: نَـبِي‎ ‎ , Prophet) Muhammad, and his grandson, the Caliph Al-Hasan ibn ‘Ali.
Abdullah ibn Salam Abdullah ibn Salam (Arabic: عبدالله بن سلام‎ ‎ "God's servant, the Son of Peace"), born Al-Husayn ibn Salam, was a companion of the Islamic prophet Muhammad, and was a rabbi before converting to Islam. He participated in the conquest of Syria and Palestine, but died in Medina.