Dhambi huzaa dhambi nyingine, mpaka mtu anaona ni vigumu kuziacha. Mwanazuoni wa zamani amesema: "Miongoni mwa adhabu za dhambi ni kufanya dhambi nyingine baada yake. Na miongoni mwa malipo ya tendo jema ni kufanya tendo jema jingine baada yake. Mtu anapofanya tendo jema, tendo jingine jema pamoja nalo husema: 'Nifanyie na mimi.' Akilifanya, la tatu husema vivyo hivyo, na kadhalika; hivyo mema yake na malipo yake huongezeka. Jambo hilo hilo hutokea, (lakini kwa njia hasi), mtu anapofanya dhambi." Kwa hiyo, matendo mema na mabaya huwa tabia na sifa katika maisha ya mtu. Ikiwa mtu mwema atakosa tendo la ibada, atajisikia kubanwa. Atajisikia kama samaki aliye nje ya maji, na atatulia tu atakapotekeleza wajibu wake. Kwa upande mwingine, ikiwa mwenye dhambi atakosa dhambi, atajisikia kubanwa, na atatulia tu atakapokuwa ameifanya dhambi hiyo. Kwa kweli, wenye dhambi wengi hufanya dhambi zao bila kuzifurahia, ili tu kuepuka dalili za kujiondoa pale wanapozikosa. Mwenye dhambi mmoja mashuhuri alisema: "Kikombe kimoja (cha mvinyo) nilikunywa kwa starehe, kikafuatwa na kingine ili kujiponya nacho (kinywaji cha kwanza)."

Sins lead to the production of other sins, until one finds it hard to give them up. A scholar of the past has said: "Among the punishments for a sin is committing a subsequent sin . And among the recompenses for a good deed is doing a subsequent good deed. When a person does a good deed, another good deed besides it says: 'Do me as well.' If he does it, a third one says likewise, and so on; therefore, his good deeds, and recompense for them, increase. The same thing occurs, (but in a negative way), when a person commits a sin." Consequently, good and bad deeds become established as habits and attributes in one's life. If a righteous person misses an obedient act, he/she would feel strained. He/she would feel like a fish out of water, and would remain calm only once he/she fulfilled his/her obligations. On the other hand, if a sinner misses a sin, he/she would feel strained, and would be only relax once he/she had committed that sin. In fact, many sinners commit their sins without savouring them, just to prevent the withdrawal symptoms of missing them. One such prominent sinner has said: "One glass (of wine) I drank for pleasure, followed by another to heal myself from it (the first drink)."

Dhambi hudhoofisha azma ya moyo, na kuimarisha nguvu ya nia ya kutenda dhambi zaidi. Azma ya kutubia kisha hudhoofika taratibu, hadi inaondolewa kabisa moyoni. Mara nusu ya moyo wa mtu inapokufa, hawezi tena kutubia kwa Allah ~- Hivyo, atatangaza toba kwa bidii, ilhali moyo wake bado umeshikamana na dhambi hizi, akiendelea kuzitenda kwa njia yoyote inayowezekana. Kwa hiyo hili ni mojawapo ya magonjwa makubwa zaidi ya moyo, na lenye uharibifu mkubwa kuliko yote.

Sins weaken the determination of the heart, and strengthen the willpower to commit more sins. The resolve for repentance is then weakened gradually, until it is totally removed from the heart. Once half of one's heart is dead, one could no longer repent to Allah ~- So, he/she would express repentance intensely, while his heart is still attached to these sins, insisting on committing them in any possible manner. So this is one of the most serious ailments of the heart, and the most destructive of all.