Page 155
wa-lladhīna ʾāmanū wa-ʿamilū ṣ-ṣāliḥāti lā nukallifu nafsan ʾillā wusʿahā ʾulāʾika ʾaṣḥābu l-jannati hum fīhā khālidūna
As for those who have faith and do righteous deeds—We task no soul except according to its capacity—they shall be the inhabitants of paradise, and they shall remain in it [forever].
— Ali Quli Qarai
Surah Al-‘A’raf, Verse 42
42. "And those who believe and do righteous deeds -We do not impose upon anyone a duty but to the extent of his ability -these are the inhabitants of Paradise wherein shall they abide forever."
The Qur'an usually brings the concepts of 'glad tidings' and 'warning' ' beside each other. In the previous verse, the end of the arrogant evildoers was stated. Here, in this verse, the good end of the eligible believers is referred to.
Some apparently similar bounties of Heaven, such as: a stream of supplied in this world, with a great number of difference, of course, for a small number of people. But it is impossible to provide eternity of life here for anyone, which is possible in Heaven and the dwellers of Paradise are eternally provided with the Divine bounties. Paradise is the reward of faith and good action that needs effort and endeavor, not any pretext. Of course, the fulfillment of all good deeds is the best, yet, in action, every body is responsible as much as he is able to do. There is no exhausting duty upon the believers in Islam. The verse says:
Again Surah Al -Hajj No.22. verse 77 says:
Then if there is any duty decreed upon us, surely we have been able to do it, although we have not applied our entire abilities.