That is, these verses of the Quran give guidance and convey the good news of a good end only to those people who possess these two qualities: (1) They should affirm faith, that is, accept the invitation of the Quran and the Prophet Muhammad (peace be upon him), believe in One God as their only Deity and Lord, accept the Quran as the Book of Allah, acknowledge the Prophet (peace be upon him) as a true prophet and their leader, and also adopt the belief that after this life there is another life, in which man has to render his full account of deeds and be rewarded or punished accordingly. (2) They should not only profess faith verbally, but should also be inclined to follow and obey the divine commands practically, and the first indication of this inclination is that they should establish the Salat and pay the Zakat. The verses of the Quran will show the right way of life only to those people who fulfill these two conditions; they will explain to them the difference between the right and the wrong at every stage on the way, protect them against the wrong ways at every turn of the way, and bless them with the satisfaction that whatever be the consequences of following the right way in the world. In the Hereafter, they will certainly attain the eternal and everlasting success and the good will of Allah only through it. For, in order to derive full benefit from the teaching of a teacher, one has first to have faith in him, then accept to be his student, and then work according to his instructions. Similarly, a patient who wants to be benefited by a doctor has first to accept him as a physician, and then follow his instructions with regard to medical dosage, prevention, etc. Then only he can assure the patient of the desired results.

Some people have interpreted the words yutun-az-zakat in this verse to mean that they should adopt moral purity. But, wherever in the Quran the word ita-i-zakat has occurred along with the word iqamat-i-salat, it means payment of the Zakat, which is the second pillar of Islam after the Salat. Moreover, the Quran has used the word tazakka for adopting piety and purity and not ita which is specifically used for the payment of the Zakat. In fact, what is meant to be impressed here is this: In order to benefit fully by the guidance of the Quran, it is imperative that one should adopt the attitude of submission and obedience in practical life, as well after the affirmation of the faith, and the establishment of the Salat and the payment of the Zakat is the first indication that one has actually adopted such an attitude. If there is no such indication, it will become obvious that one is rebellious: he might have acknowledged a ruler as such, but he is not inclined to carry out his commands.