The Five Roots of Usul ad-Din (Cambridge (CIE) IGCSE Religious Studies): Revision Note
Exam code: 0490
Tawhid as one of the five roots
The five roots of Usul ad-Din
Shi’a is the other major branch of Islam, aside from Sunni
Shi’a Muslims believe in the six articles of faith but also accept the five roots of Usul ad-Din, which are based on the teachings of the Qur’an, the Hadith and the agreement of early Shi’a scholars and leaders
What are the five roots of Usul ad-Din?
The five roots of Usul ad-Din are five key principles of the faith that are sometimes called the “roots of religion”
Every Shi’a Muslim must make themselves aware of these key principles or truths

The five roots of Shi’a Islam
Tawhid
Tawhid is the belief in one God, Allah
Muslims believe that Allah is the Supreme Being, creator of the universe
Allah is One God, indivisible and absolute; nothing comes close to Him as the ultimate source of power and creation
“He is Allah, the One, Allah is eternal and absolute. None is born of Him, He is unborn. There is none like unto him” (Qur’an 112:1–4)
Allah has 99 names or characteristics that make it clear that there is one true God; these include:
Al-Ahad (the one and only)
All Wahid (the one)
According to a Hadith, the Prophet Muhammad (pbuh) said that Muslims should mention Tawhid first when telling non-Muslims about Islam
“Let the first thing to which you will invite them, be the Tauhid (Tawhid) of Allah” (Sahih al-Bukhari 93:469)
This means that:
Tawhid is the most important belief for Muslims
Islam is a monotheistic religion
This is the same as the equivalent in the six articles of faith
‘Adl (divine justice)
‘Adl as one of the five roots of Usul ad-Din
‘Adl or Adalat means belief in divine justice
This is the belief that Allah is fair and will treat everything and everyone justly
He will hold humans accountable for their actions
Muslims need to be aware that there is good and evil in everything, but Allah commands them to do good
“Indeed Allah commands them to do justice” (Qur’an 16:19)
Allah acts with a purpose that humans cannot understand
Sometimes justice can be hard to see, but Shi’a Muslims should try to understand as much as they can
The first imam, Ali, stated in his will to his son:
“I advise you to be wary of your duty to Allah in wealth and poverty … and [I advise you] of being just towards both friend and foe”
(Tuhaf al-Uqul)
Risalah (prophets) as one of the five roots
Risalah is Arabic for “message” and refers to “prophethood”
Risalah is the belief that Allah chose special people to communicate his word to humanity and to teach and guide people along the right path
These people are known as prophets
Prophets receive revelation from Allah through his angels
Muslims believe that Allah has chosen many prophets to bring the message of Islam to people
There are 25 key prophets of Allah identified in the Qur’an, including Adam, Ibrahim (Abraham), Musa (Moses), Isa (Jesus) and Muhammad (pbuh)
Muslims believe that there were 124,000 prophets who developed the religion over time
The Prophet Muhammad (pbuh), the last of the prophets, is known as “The Seal”
This is the same as the equivalent in the six articles of faith
Imamah (authority of the imams)
Imamah as one of the five roots of Usul ad-Din
Imamah is the belief in the God-given authority of the imams
This refers to the Prophet Muhammad's (pbuh) successors
Shi’a Muslims believe that Allah appointed certain imams or leaders to guide humanity with authority and wisdom
This group of people includes not only the Prophet Muhammad (pbuh) but also his daughter Fatimah and a line of imams starting with Ali
This group is known as the Ahl al-Bayt, or People of the Prophet’s House
The Ahl al-Bayt are believed to be pure and infallible (unable to make mistakes)
They are known as “lights” in some Shi’a writings, meaning that they were sent to show people the path out of darkness and sin and lead them towards Allah
“God wishes to keep uncleanness away from you, people of the [Prophet’s] House, and to purify you thoroughly” (Qur’an, Surah 33:33)
Most Shi’a Muslims believe there were 12 imams after the death of the Prophet Muhammad (pbuh), known as Twelvers
Shi’a Muslims think that dedicating themselves to these 12 imams is essential to their faith
Other Shi’a Muslims are known as Seveners because they believe there was a different line of imams, numbering seven in total
Mi'ad (Day of Resurrection)
Mi’ad as one of the five roots of Usul ad-Din
Mi’ad is the belief in the Day of Judgement and Resurrection
This is the belief that there will be a day of judgement and resurrection when all humans will be judged by Allah, who decides whether they go to heaven or hell based on their deeds
Everyone must answer for themselves and accept the consequences of their thoughts and actions on earth
Human life acts as a test for the eternal life that will come after it
This is the same as the equivalent belief, Risalah, in the six articles of faith
“All praise belongs to Him in this world and the next; His is the Judgement; and to Him you shall be returned” (Qur’an, Surah 28:70)
Worked Example
Name two of the five roots of Usul ad-Din
[2 marks]
Answer:
One of the five roots of Usul ad-Din is Tawhid [1 mark]
Another is the belief in Imamah [1 mark]
Examiner Tips and Tricks
The five roots of Usul ad-Din are central to Shi’a Islam. The later section of these revision notes, titled The Development of Islam, explains the difference between Sunni and Shi’a Islam in greater detail.
It may help you to think of each of these five roots as forming the foundation of a Muslim’s faith, just as roots do for a tree.
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