What are the pillars of Islamic belief (Iman)?

The six pillars of Iman are: belief in the oneness of Allah, belief in His angels, belief in His revealed books, belief in all of His prophets, belief in the Day of Judgment, and belief in divine decree (Qadr) — that whatever Allah has willed, good or seemingly difficult, occurs by His knowledge and wisdom. These form the foundation of Islamic creed, alongside the five pillars of practice (the declaration of faith, prayer, fasting, Zakat, and Hajj).