فلولا كانت قرية آمنت فنفعها إيمانها إلا قوم يونس لما آمنوا كشفنا (10:98) بالانجليزي

(10:98) Did it ever happen that the people of a town believed on seeing God's chastisement and its believing profited them? (There is no such instance) except of the people of Yunus. *98 When they believed We granted them reprieve from humiliating chastisement in this world, *99 and We let them enjoy themselves for a while. *100

Tafseer Abu-al-A'la Maududi

Page 220 English Traditional

*98). Even though the Prophet Yunus, called Jonah in the Bible (860-784 BC). was of Israeli descent, he was sent to Iraq in order to guide the Assyrians. The Assyrians are, therefore, called here 'the people of Yunus'. Ninevah. the famous ancient town, was their capital, a great many ruins of which are still to be found on the left bank of the Tigris, opposite the present city of Mosul. One of the mounds in this area is still named after the Prophet Jonah. The splendour of the Assyrians may be gauged from the fact that their capital, Ninevah. spread over a radius of sixty miles.
*99). Although there are allusions to this incident in three places in the Qur'an, there is no mention of any detail. (See al-Anbiya', 21: 87-8; al-Saffat 37: 139-48; and al-Qalam 68: 48-50.) In view of the above, it cannot be stated with confidence why the Assyrians were singled out for being spared God's punishment even though God's Law is that if a people decide to believe after God has decided to punish them, their believing afterwards does not profit them.
The 'Book of Jonah' in the Bible contains some material relevant to the matter, but unfortunately that information is barely reliable. For, the 'Book of Jonah' is in no sense a heavenly revelation, nor was it even authored by the Prophet Jonah (peace be on him). What actually happened is that some four or five hundred years after Jonah's death some anonymous person produced the 'Book of Jonah' and had it incorporated into the Bible. Moreover, some of the contents of the 'Book of Jonah' are too absurd to be acceptable. However, were one to reflect on the allusions to the people of Yunus in the Qur'an and on the information provided by the 'Book of Jonah', one is inclined to support the view of the Qur'an-commentators, namely that since the Prophet Jonah (peace be on him) had left his station without obtaining God's permission to do so and since the Assyrians repented and sought pardon from God as soon as they saw the signs of God's impending punishment, God pardoned them.
One of the basic principles mentioned in the Qur'an concerning God's punishment of the world's nations is that He does not punish any nation until God's Message has been fully conveyed to them so that the people are left with no justification to claim that they were not aware of His Message. (See the Qur'an. al-Nisa' 4: 165 in conjunction with al-Isra' 17: 15-Ed.) Now in this case, as we can see, the admonition of the Assyrians did nor continue till the very end of the period granted to them by God because Prophet Yunus (peace be on him) migrated from his station. It is presumably for this reason that God in His justice decided not to punish them since all the requisite conditions of punishment had not been fulfilled. (For details see al-Saffat 37, n. 85.)
*100). When the Assyrians embraced the true faith, they were granted a fresh lease of life. However, they once again became wayward both in matters of belief and conduct. Though the Prophet Nahum (720-698 BC) warned them, it still had no effect on them. The final warning was delivered to them by the Prophet Zephaniah (709-640 BC) but that too was of no avail. Ultimately, God sent the Medes against them in 612 BC. The king of the Medes, with the assistance of the Babylonians, invaded Assyria, The Assyrian army was routed and besieged within the walls of Ninevah. Although they put up some resistance for a time, the flooded Tigris swept away the city walls, enabling the invaders to break through the defences and capture the city. Subsequently they set fire to the whole city and its environs. The Assyrian king set his own palace ablaze and was himself burnt to death. This brought to an end the Assyrian empire and civilization. However, recent excavations in the area have brought to light many traces of massive conflagration.