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wa-nazaʿnā mā fī ṣudūrihim min ghillin tajrī min taḥtihimu l-ʾanhāru wa-qālū l-ḥamdu li-llāhi lladhī hadānā li-hādhā wa-mā kunnā li-nahtadiya law-lā ʾan hadānā llāhu la-qad jāʾat rusulu rabbinā bi-l-ḥaqqi wa-nūdū ʾan tilkumu l-jannatu ʾūrithtumūhā bi-mā kuntum taʿmalūna
We will remove whatever rancour there is in their breasts, and streams will run for them. They will say, ‘All praise belongs to Allah, who guided us to this. We would have never been guided had not Allah guided us. Our Lord’s apostles had certainly brought the truth.’ And the call would be made to them: ‘This is paradise, which you have been given to inherit because of what you used to do!’
— Ali Quli Qarai
Surah Al-‘A’raf, Verse 43
43. "And we will remove whatever rancor be in their breasts; the rivers shall flow beneath their abodes and they will say: 'All praise be to Allah who guided us to this; and had Allah not guided us, we would not have been guided. Indeed, our Lord's messengers came with the truth.' And it will be cried out to them that: 'This is the Garden which you inherit for what you used to do."
The Arabic term /qill/ means 'a secretly penetration '. Regarding this, the secret grudge and envy are also called /qill/. In the former verses, we recited that the dwellers of Hell curse each other. Now, in this verse, the Qur'an says that the dwellers of Heaven have no rancor in their breasts unto each other. Whatever they have is peace and affection. None may envy another's rank. All of them are thankful of the bounties of Allah in Heaven.
Explanations
1. Prophets are some means of guidance, and their guidance is accompanied with truth. They themselves, their speeches, their actions, heir styles, and their promises are entirely truth.
2. According to the Islamic literature, every one of the believers and the disbelievers has a place both in Heaven and in Hell. But, believers inherit the places of disbelievers in Heaven and disbelievers inherit the Hellish places of the believers.
3. It is understood from the Islamic traditions that the gates of happiness and wretchedness are open to everybody. No one was created for Heaven nor for Hell from the beginning. It is the person's choice and action that leads the one toward the final abode.
4. Heaven stands instead of good action, not because of bare wishes and imaginations.