There is one sin all of us should be aware of for Allah has told us He will Forgive anything except this: To associate others in partnership with Allah. This is called Shirk.
“Surely Allah does not forgive that anything should be associated with him, and forgives what is besides that to whomsoever He pleases, and whoever associates anything with Allah, he devises indeed a great sin.” Surah 4 Ayah 48; Holy Qur’an.
“Surely whoever associates (others) with Allah, then Allah has forbidden to him the garden, and his abode is the fire; and there shall be no helpers for the unjust.” Surah 5 Ayah 72; Holy Qur’an.
With that in mind, here is a list I have accumulated according to scholars what is considered Shirk and we should stay clear:
1. Wearing chains/necklace whether made of gold, bronze or Iron for protection against calamity.
2. Wearing amulets that contain writings from innovated invocations and/or writings from the Qur’an and Sunnah. Also, seeking help from Jinns in diagnosing illness, discharging witchcraft.
The Messenger Sallalahu alayhi wa Salaam said, “Indeed the amulets and love potion (enchantment) are Shirk.”
[Ahmed and Abu Dawud]
3. Hanging piece of bronze or iron in the car, with the name of Allah or Ayayul-Kursiy, aswell as placing the Qur’an inside the car as people believe this that this stuff can save the car and can prevent it from evil eye.
The messenger Sallalahu alayhi wa Salaam said, “Whoever trust in a certain thing, shall be delegated to it.”
[Ahmed, Tirmidhi and Hakim]
4. Tabarruk (Asking and seeking blessing and favor) from humans, trees, stones including the Ka’bah. It is permissible to touch the Ka’bah should you have the opportunity but to intend Tabarruk is Shirk.
Umar ibn Al-Khattab said, “Truly I know that you are nothing but a stone, you cannot harm nor can you benefit, were it not that I saw the Messenger of Allah kiss you, I would not kiss you.”
5. Vowing to other than Allah. A lot of people swear on the Qur’an, swear on the Prophet and swear on their loved ones life’s. As vowing is a form of worship, it is not permissible to offer to other than Allah The Exalted.
The Messenger Sallalahu alayhi wa Salaam said, “Whoever swears by other than Allah, indeed committed disbelief and Shirk.”
6. Invoking the Jinn is prohobited & seeking help and refuge from other than Allah.
The Messenger Sallalahu alayhi wa Salaam said, “And if you ask, then ask Allah, and if you seek help, then seek help from Allah.”
7. Exaggarating the pious people i.e scholars and sheikh’s and comparing anyone to the ranks of the Messengers.
8. Performing Salah above the graves of loved ones is not permissible and building mosques above graves or tombs is forbidden and a Muslim should not pray in a mosque where this is the case.
9. Invoking fortune tellers, sorcerers or astrologers.
10. Tiyarah (an act of cynisism) depending on birds, or on a specific day (The Christians believe Friday the 13th is an extremely unlucky day) or on a month, or on a human hence Tiyarah is Shirk.
11. Lack of patience or annoyance at the Qadr of Allah. “O Allah why did you do this to me? or to so and so?” Or, “O Allah why has this happened to me?”
12. Showing off and telling the creation about your good deeds and doing worship for worldly benefits.
‘Do the good and throw it in the sea.‘ Meaning: do the good toward others and forget it, don’t wait any rewards.
13. It is not permissible to say “It has happened by the will of Allah and yours.” or “I trust in Allah and so & so.” Instead, one should say then instead of and.
The Messenger Sallalahu alayhi wa Salaam used to command his companions if they want to swear they should say “By the Lord of Ka’bah.” And saying, “It has happened by the will of Allah then you.”
14. Cursing a day, era, aeon or month.
15. Naming one’s self as Abdunnabiy (slave of the Prophet); Abdul Ka’bah (slave of Ka’bah); Abdul Husain (slave of Husayn.) These names are not allowed, as servitude is only for Allah such as Abdullah or Abdurrahman.
16. Placing the Cross, depicting it or letting it on the clothes with consent.
May Allah protect us and our families from committing sins that we know and those which we do not know.