Zunubai suna tsayuwa a matsayin cikas a hanyar zuciya wajen biyayya ga Ubangiji; suna hana mutum ci gaba zuwa ga Ubangijinsa cikin tsarki. Zuciya kan motsa zuwa ga Allah da ƙarfi, amma idan zunubai suka rinjayeta, ƙarfinta yana raguwa; kuma idan an cire ƙarfinta, zuciya kan katse dangantakarta da Allah ~ don haka sai ya zama da wahala a mayar da ita. Zunubi na iya kashe zuciya, ko kuma ya jefa ta cikin wata cuta mai tsanani, yana raunana ƙarfinta, har raunin ya ƙare a ɗaya daga cikin cututtuka takwas da Annabi ﷺ ya nemi tsari da Allah daga gare su, waɗanda su ne: Damuwa, baƙin ciki, rashin iya aiki, kasala, rashin jarumta, rowa, nauyin basussuka, da kuma mamayar mutane. Damuwa da baƙin ciki suna da alaƙa; idan wani al'amari mai damuwa ya shiga zuciya game da wani abu da ake sa ran zai faru a nan gaba, to yana haifar da damuwa. Amma idan ya shafi abin da ya riga ya faru, yana haifar da baƙin ciki. Rashin iya aiki da kasala suna da alaƙa: idan mutum ya yi sakaci da abubuwan da ke haifar da alheri da nasara, saboda rashin ƙarfinsa, to wannan rashin iya aiki ne. Amma idan dalilin shi ne rashin niyya, to kasala ce. Rashin jarumta da rowa suna da alaƙa: idan mutum ba ya samar da wani amfani, lokacin da dalilin yana cikin jikinsa, to al'amari ne na rashin jarumta. Amma idan saboda dukiyarsa ne, to rowa ce. Nauyin basussuka da mamayar mutane suna da alaƙa: idan wasu mutane suka nuna girman kai ga mutum, kuma dalilin yana da hujja, to hakan yana faruwa ne saboda nauyin bashi. Amma idan ba shi da hujja ba, to yana faruwa ne saboda mamayar mutane. Zunubai na ɗaya daga cikin dalilan da ke kawo waɗannan cututtuka takwas. Suna kawo mummunan bala'i, wahala, mafi munin masifu, da ƙeta na maƙiya. Suna kuma ɗaya daga cikin dalilai masu ƙarfi da ke kai ga dakatar da ni'imomin Allah, waɗanda daga baya kan juya zuwa azabarsa da la'anarsa.

Sins stand as obstacles in the way of one's heart, in obeying the Lord; they prevent one from stepping forward towards one's Lord, in a state of purity. The heart normally moves towards Allah with strength, but when it is overpowered by sins, its power is weakened; and if its power is removed, the heart breaks its connection with Allah ~' so then it becomes harder to bring it back. A sin could either kill the heart, or inflict it with a serious ailment, weakening its power, until its weakness ends in one of the eight ailments, from which the Prophet ~ sought refuge in Allah, which are: Worry, grief, inability, laziness, cowardice, miserliness, the heavy burden of debts, and the overpowering of men. Worry and grief are connected; when a troubling matter invades the heart which is concerned with a future expected matter, then it causes worry. But if it was concerned with a past matter, it causes grief. Inability and laziness are connected: if a person neglects the factors which produce goodness and success, because of his/her incapacity, then it is inability. But if the reason is due to a lack of will, then it is laziness. Cowardice and miserliness are connected: if a person produces no benefit, when the cause is in his/her body, then it is a matter of cowardice. But if it is due to his/her wealth, then it is miserliness. The burden of debts and the overpowering of men are connected: when other people act with a sense of superiority towards a person, and the reason is justified, then it is out of the heavy burden of a debt. But if it is not justified, then it is due to the overpowering of men. Sins are one of the reasons which bring these eight ailments. They bring evil affliction, misery, the most terrible calamities, and the malice of enemies. They are also one of the powerful reasons that lead to the cessation of Allah's Blessings, which later tum into His Punishment and Curse.