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.
Hashim ibn Abd Manaf Hashim ibn 'Abd Manaf al Mughirah (Arabic: هاشم بن عبد مناف المغيرة‎ ‎ ; ca. 464 – 497) was the great-grandfather of the Islamic prophet Muhammad and the progenitor of the Banu Hashim clan of the Quraish tribe in Mecca.