Greatest Sins in Islam: 69 Major Acts a Believer Must Avoid
saleemIslam is not just a path to goodness — it’s a shield from destruction. Allah ﷻ, in His infinite wisdom and mercy, doesn’t leave us guessing about right and wrong. He clearly warns us about actions that can darken the heart, harm others, and ruin our Hereafter. These are the major sins, or al-Kaba’ir, and avoiding them is one of the clearest signs of true faith.
We all make mistakes. But certain sins are so weighty in the sight of Allah that He has promised severe punishment unless one truly repents. As the Prophet Muhammad ﷺ said:
“The five daily prayers, Friday to Friday, and Ramadan to Ramadan expiate the sins committed between them — so long as major sins are avoided.”
(Sahih Muslim)
And Allah Himself says:
“If you avoid the major sins which you are forbidden, We will remove from you your lesser sins and admit you to a noble entrance [into Paradise].”
(Surah An-Nisaa 4:31)
Knowing these sins isn’t about fear — it’s about awareness, accountability, and striving to protect the soul that Allah has entrusted us with. If you want to live a life that draws you closer to Allah and secures your place in the Hereafter, you must start by recognizing what to stay away from.
Why Knowing the Major Sins Matters
Not all sins weigh the same in the sight of Allah. Some actions carry far more serious consequences — not just in the Hereafter, but in how they affect your heart, your relationships, and your standing with your Lord. These are what we call the major sins in Islam, or al-Kaba’ir.
So why should you care? Because Allah and His Messenger ﷺ didn’t just mention these sins — they issued strong warnings about them, including:
- Severe punishment in the Qur’an and authentic Hadith
- Curses from Allah ﷻ or His Prophet ﷺ
- Legal consequences under Islamic law (hudood)
And here’s the incredible part — Allah makes a beautiful promise in the Qur’an:
“If you avoid the major sins which you are forbidden, We will remove from you your lesser sins and admit you to a noble entrance [into Paradise].”
(Surah An-Nisaa 4:31)
That’s powerful. Avoiding the greatest sins in Islam isn’t just about staying out of trouble — it’s a way to cleanse your record of minor sins and unlock the mercy of Allah.
When you know what the major sins are, you’re one step closer to protecting your soul, living with purpose, and earning Allah’s ultimate reward: Jannah.
What Counts as a Major Sin?
While some hadiths mention seven deadly sins, scholars agree that there are far more. In fact, `Abdullah ibn Abbas (RA) said:
“Seventy is closer to their number than seven.”
Here is a carefully compiled list of 69 major sins in Islam, drawn from Qur’an, Sunnah, and classical scholarship.
List of the 69 Greatest Sins in Islam
- Shirk – Associating partners with Allah
- Murder – Taking an innocent life
- Magic / Sihr
- Abandoning Salah
- Not paying Zakah
- Skipping Ramadan fasting without excuse
- Not performing Hajj while able
- Disrespecting parents
- Severing family ties
- Adultery and fornication (Zina)
- Homosexual acts
- Dealing in riba (interest)
- Consuming orphan’s wealth
- Lying about Allah or His Messenger
- Deserting the battlefield
- Oppression and injustice
- Pride and arrogance
- Bearing false witness
- Drinking alcohol or taking drugs
- Gambling
- Slandering chaste women
- Stealing from war booty
- Theft
- Highway robbery
- False oaths
- Bribery
- Earning haram income
- Consuming haram food
- Suicide
- Habitual lying
- Unjust judgments
- Accepting or giving bribes
- Imitating the opposite gender
- Allowing illicit display of female beauty
- Nikah halala-style marriage trickery
- Neglecting cleanliness after urination
- Showing off (riya)
- Seeking Islamic knowledge for fame
- Betraying trust (Amanah)
- Recounting favors done to others
- Rejecting divine destiny (Qadr)
- Listening to private conversations
- Carrying gossip (nameemah)
- Excessive swearing
- Breaking contracts
- Belief in astrology or fortune-tellers
- Bad behavior towards one’s husband
- Making statues or images of living beings
- Wailing and tearing clothes in grief
- Mistreating people or animals
- Neglecting the weak and poor
- Offending your neighbor
- Insulting fellow Muslims
- Mocking or looking down on others
- Wearing garments out of pride
- Men wearing gold or silk
- Slaughtering animals for other than Allah
- Falsely attributing a child to someone
- Fighting or arguing violently
- Withholding water from those in need
- Cheating in weights and measures
- Feeling safe from Allah’s punishment
- Mocking the pious
- Avoiding jama’ah prayer without excuse
- Skipping Jumu’ah without valid reason
- Unjust wills that rob heirs
- Plotting evil
- Spying for enemies against Muslims
- Cursing or insulting the Sahabah (Companions)
Are All Major Sins Equal?
No. Some carry greater consequences than others. For example:
Shirk is never forgiven if one dies without repenting.
Zina, riba, and murder are repeatedly described as punishable by Hell unless sincerely repented for.
Other sins, like gossip or arrogance, may seem “small” but are spiritually devastating.
Can Major Sins Be Forgiven?
Yes — even the greatest sins in Islam can be forgiven. That’s the beauty of Allah’s mercy. No matter how far someone has gone or how many times they’ve slipped, the door of repentance (Tawbah) remains wide open — as long as your heart is sincere.
Allah doesn’t expect perfection from us — but He does expect us to return to Him, again and again. The Qur’an gives us hope in one of the most powerful verses:
“Say, ‘O My servants who have transgressed against themselves [by sinning], do not despair of the mercy of Allah. Indeed, Allah forgives all sins.’”
(Surah Az-Zumar 39:53)
That includes even the major sins like shirk, adultery, riba (interest), and others. But real forgiveness requires more than just words — it calls for genuine change.
How to Repent from Major Sins in Islam
If you’ve committed one of the greatest sins in Islam, don’t lose hope. Islam gives every sinner a way back through sincere Tawbah.
Start by leaving the sin immediately — no delays, no excuses. Feel real regret in your heart, and acknowledge the weight of your actions. Then, make a strong intention never to return, no matter the temptation.
Turn to Allah with sincerity. Speak to Him, make dua, and ask for His forgiveness. And if your sin harmed someone else, do your best to make it right — return what was taken or seek forgiveness.
No sin is too big for Allah’s mercy. As long as you return to Him with a sincere heart, repentance in Islam can wipe the slate clean.
Final Thoughts
The greatest sins in Islam are not just major mistakes — they are spiritual burdens that weigh the heart. But even if you’ve committed them, don’t lose hope. Islam is a path of redemption. Allah’s door remains open, even for the darkest soul that truly repents. No matter how far you’ve gone, His mercy is always closer.
“Say, ‘O My servants who have transgressed against themselves [by sinning], do not despair of the mercy of Allah. Indeed, Allah forgives all sins.’”
(Surah Az-Zumar 39:53)
So… what’s stopping you from making that turn back today?
