Zunubi za a iya bayyana shi ta hanyoyi biyu: juya baya daga umarnin Allah, ko aikata abin da aka haramta. Allah ~ ya jarraba uban aljannu da na mutane saboda aikata wadannan zunubai biyu, wadanda aka raba su gida hudu: (1) Zunubai na sarauta: idan mutum ya dauki wasu siffofin Ubangiji, kamar girma, girman kai, iko mara iyaka, mulki, daukaka, tsawaita, da sauransu, sai ya fada cikin shirka, ta hanyar hada kansa da Allah ~. Wannan nau'i shi ne mafi girman zunubi, domin mutum yana kokarin yin gogayya da Allah a siffofinSa da mulkinSa, wanda ba a iya gafartawa ba. Allah ~ ya ce: (Hakika Allah ba ya gafarta a hada Masa abokin tarayya (a ibada), amma yana gafarta abin da ya kasance banda haka ga wanda Yake so, kuma duk wanda ya hada abokin tarayya da Allah a ibada, to, hakika ya kirkiro babban zunubi) 1 (2) Zunubai irin na shaidan: idan mutum ya yi koyi da shaidan a siffofinsa, kamar hassada, zalunci, yaudara, cin amana, umartar aikin sabo, hana ayyukan alheri, bidi'a a addini, da kiran mutane zuwa ga bata. (3) Zunubai irin na mafarauta: idan mutum ya zama azzalumi, yana aikata zalunci ga sauran masu rauni, yana cutar da su yana sa su wahala. (4) Zunubai irin na dabbobi: idan mutum ya mallaki sha'awar son zuciya ta jima'i, wanda ke kai shi ga zina da fasikanci. Wannan nau'in zunubi shi ne mafi yaduwa a tsakanin mutane, saboda ba sa iya daukar wadancan siffofi na sarauta ko na mafarauta. Duk da haka, ta wannan nau'in ne suke neman samun karbuwa da nuna cewa suna da wadancan sauran siffofi, tun daga na mafarauta zuwa na shaidan, har ma suna kokarin yin gogayya da Allah ~ a Ubangijinsa da Tauhidinsa.

A sin can be defined in two ways: turning away from a Commandment of Allah, or committing a prohibited deed. Allah ~ had put on trial the father of the jinn and that of mankind for committing these two sins, which are divided into four categories: (1) Kingly sins: when a person assumes some godly attributes, such as greatness, pride, omnipotence, subjugation, highness, exaltedness, etc. he falls into polytheism, by associating himself with Allah ~- This type is the most serious sin of all, because one tries to compete with Allah in His Attributes and His Sovereignty, which is unforgivable. Allah ~ said: (Verily, Allah does not forgive that partners should be set up with Him (in worship), but He forgives (anything else) except that, to whom He wills, and whoever sets up partners with Allah in worship, he has indeed invented a tremendous sin) 1 (2) Devilish sins: when a person imitates the devil with his attributes, such as envy, oppression, cheating, treason, enjoining misdeeds, forbidding righteous deeds, innovating in religion, inviting people to misguidance. (3) Predatory sins: when a person becomes a tyrant and acts oppressively towards other weak people, inflicting them with harm and suffering. ( 4) Animalistic sins: when a person becomes possessed by his passion for lust, which leads to adultery and immorality. This type of sin is the most common among people as they are unable to assume those kingly or predatory attributes. However, it is through this type that they aim to acquire recognition for possessing those other attributes, from the predatory to the devilish, then even trying to compete with Allah ~ in His Divinity and Oneness.