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40 Days of Mourning

A historical look at the “40 days” practice – where it really comes from, how it entered Muslim culture, and what the Qur’an says about mourning and remembering the dead.

Overview
What people mean by “40 days”
Culture vs. Revelation

In many Muslim communities, when a person dies the family is told: “There is a special 40th day – make a gathering, recite, feed people, and the soul needs this.” Sometimes people say: “If you don’t do the 40 days, you are disrespecting the dead,” or they believe that certain du‘as on that day will guarantee forgiveness and Paradise.

From a Qur’an-first perspective, we ask a simple question: Did Allah make the 40th day an obligation or a special gate to Jannah? If the answer is “no text in the Qur’an”, then we must admit that this timing is culture, not revelation.

The Qur’an mentions death, burial, patience, du‘a, charity, and inheritance in great detail, but it never commands a fixed 40-day mourning ceremony or promises that a soul is judged exactly on that date.
History
Where did the “40th day” come from?
Christian funeral customs

The idea of a special memorial on the 40th day after death is well-known in Eastern Orthodox Christianity and some other Christian traditions. After a person dies, there are memorial services on the 3rd, 9th and 40th day, and then yearly anniversaries.

In that tradition, people believe that the soul passes through different “stages” and that on the 40th day there is a special status or judgment. Families often keep mourning and avoid celebrations during these 40 days, then hold a bigger gathering and church service on day forty.

Notice: this is not something from the Qur’an. It developed inside Christian theology and church practice long after ‘Isa (Jesus) عليه السلام. Muslims who live among Christians, or under Christian-rule cultures, naturally saw these customs and many simply copied them.

The number 40 appears in the Bible and in history (40 days of rain in the Flood, 40 years in the wilderness, 40 days of fasting, etc.), but the specific mourning rule of 40 days is a church tradition, not a divine law for Muslims.
Copying previous nations
How 40 days entered Muslim practice
Imitating others

In many places, Muslim society lived side by side with Christian communities that already had strong 40-day mourning customs. Over time, some Muslims:

Step by step, a Christian-style custom became treated like a Shar‘i rule in Muslim communities. Scholars, imams, and cultural leaders repeated it. Parents taught children that “this is Islam,” even though Allah never revealed that rule in His Book.

“Or do they have partners who have legislated for them in the religion that which Allah has not given permission for?”
(Qur’an 42:21)

When we turn a cultural habit into a religious requirement, we are effectively giving those leaders, imams, and cultures a share in Allah’s right to legislate. This is exactly what the Qur’an warns about – taking rabbis, monks, or scholars as lords in the sense of obeying them in invented religion instead of checking the revelation.

Revelation vs custom
What does the Qur’an actually say?

The Qur’an speaks about death and mourning many times, but the guidance is different from cultural “40 days”:

When teachers, parents, Sufi groups, Tablighis, Salafis, or any sect insist on rituals that Allah never revealed – we must politely but firmly go back to the Qur’an. This includes 40-day ceremonies, paid khatams, special mourning “packages”, or promises that “if you do this set of du‘as you are guaranteed Paradise.”
Critical issues
Where the 40-day practice goes wrong

The problem is not that a family gathers to read Qur’an or to make du‘a. The problem is when people attach to the number 40 what Allah never attached to it.

“This day I have perfected for you your religion, completed My favour upon you, and have chosen for you Islam as your way.”
(Qur’an 5:3)

If the religion was already perfected in the Prophet’s time, then adding new fixed rituals like 40th-day mourning as if Allah commanded them means we are accusing the message of being incomplete.

Practical guidance
How to handle death according to Qur’an
Real respect for the deceased is not in copying Christian mourning customs or sect practices. Real respect is in obeying Allah’s book, avoiding shirk, avoiding innovations, and living the Qur’an in our own lives so that we meet Allah with a clean heart.