COMMENTARY on 17:17
A. Yusuf Ali:

Translation:
How many generations have We destroyed after Noah? 2194 and enough is your Lord to note and seest the sins of His servants. 2195
Commentary:

2194  Noah's Flood is taken as a new starting point in history. But even after that hundreds of empires, towns, and generations have perished for their wickedness.

2195  Let not the wicked think, because they are given a lease of life and luxury for a time, that their wickedness has escaped notice. Allah notes and sees all things, both open and secret. He knows the hidden motives and thoughts of men, and He has no need of any other evidence. His knowledge and sight are all-sufficient.