Concept:Hudhayfah ibn al-Yaman was a close companion of Prophet Muhammad well known for alerting the Muslim community to variations in Qur'anic recitation.
Explanation:Hudhayfah ibn al-Yaman was a trusted companion of the Prophet.
He was not chosen as a delegate at the Treaty of Hudaybiyyah.
Compiling the Qur'an into a single volume was carried out by Zayd ibn Thabit, not Hudhayfah.
He also did not lead the Muslims at the Battle of Hunayn.
During expeditions to Armenia and Azerbaijan, Hudhayfah heard Muslims reciting the Qur'an with different dialectical styles.
He noticed these variations and reported his concern to Caliph Uthman.
This prompted Uthman to establish a standard, unified text of the Qur'an.
Thus, Hudhayfah ibn al-Yaman is specially noted for detecting dialectical differences in Qur'anic recitation.
Answer:D. detecting dialectical difference in Qur'an recitation.