After relating events of the early people, the above verses invite the people of Arabia and the people of the world to take lesson from these events by abstaining from deeds that incurred Allah's wrath, and by following the practices that led the prophets and their believers to eternal success. The verse 100 speaks " Is it not a guidance to those who inherit the land after it's (former) inhabitants that, if We so will, We would afflict them for their sins?" The word ھَدٰی۔ یَھدِی signifies to guide or to inform. The events narrated above have been made the subject of the verb (guide) یَھدِ. The verse implies that these events should serve as a lesson and a means of guidance for later generations who have inherited the land from their earlier owners. They too, can incur the punishment of Allah for their disbelief just as their ancestors met the fate of ruin and disaster for their disobedience.
Thereafter, the verse says:
وَنَطْبَعُ عَلَىٰ قُلُوبِهِمْ فَهُمْ لَا يَسْمَعُونَ
"And We seal their hearts so that they do not listen"
The word: طبع is used for printing or stamping. It implies that these people have taken no lesson from the past events with the result that they incurred the wrath of Allah making their hearts sealed. They are, therefore, unable to listen to the truth. The Holy Prophet g said in a Tradition: When one commits sin for the first time a black dot is placed on his heart, if he keeps committing sins for the second and third times the second and third dots are placed. If one increases in his sins without repenting to Allah, these black spots keep increasing until the whole heart is painted black." This ultimately deprives man of his natural faculty of distinguishing right from wrong. This, consequently, leads one to receive evil as good and good as evil, harmful as useful and useful as harmful.
This perversion of human understanding has been termed in the Holy Qur'an as ' ra'n' signifying the rust of the heart. In this verse, as in many other verses of the Holy Qur'an, this stage has been named as 'taba". The result of their hearts being sealed has been mentioned at the end of the verse by saying (لَا يَسْمَعُونَ ) "so that they do not listen". One may think that more appropriate expression in this context was (S' ) they do not understand" as the adverse effect of sealing, of فَهُمْ لَا يَفقھُونَ the heart is obviously related to the faculty of understanding and not to the listening. The Holy Qur'an has used the word 'listen' to indicate that understanding is usually the result of listening to the truth. Now, since their hearts have been sealed they are rendered unable to listening the truth. Another explanation to this may be that all human faculties and limbs are controlled by human heart, that is, the function of all human parts is adversely affected by malfunctioning of the heart. When one loves anyone or anything he likes everything - good or bad - in that person or object.
(Is it not a guidance for those who inherit the earth from its previous inhabitants. ..) "(Allah says,) did We not make clear to them that had We willed, We would have punished them because of their sins" Mujahid and several others said similarly. Abu Ja`far bin Jarir At-Tabari explained this Ayah, "Allah says, `Did We not make clear to those who succeeded on the earth after destroying the previous nations who used to dwell in that land. Then they followed their own ways, and behaved as they did and were unruly with their Lord. Did We not make clear to them that,
(that had We willed, We would have punished them for their sins.) by bringing them the same end that was decreed for those before them,
(And We seal up their hearts), We place a cover over their heart,
(so that they hear not), words of advice or reminding"' I say that similarly, Allah said,
(Is it not a guidance for them: how many generations We have destroyed before them, in whose dwellings they walk Verily, in this are signs indeed for men of understanding.) 20:128
(Is it not a guidance for them: how many generations We have destroyed before them in whose dwellings they do walk about Verily, therein indeed are signs. Would they not then listen) 32:26 and,
(Had you not sworn aforetime that you would not leave (the world for the Hereafter). And you dwelt in the dwellings of men who wronged themselves)14:44-45 Also, Allah said,
(And how many a generation before them have We destroyed! Can you find a single one of them or hear even a whisper of them) 19:98 meaning, do you see any of them or hear their voices There are many other Ayat that testify that Allah's torment strikes His enemies, while His bounty reaches His faithful believers. Thereafter comes Allah's statement, and He is the Most Truthful, the Lord of all that exists,