American Jews professor converted to Islam.

 

Allah commands not to look at the wealth and beauties of others especially disbelivers because it causes greediness in minds and greediness for property takes away human beings from remembering Allah . Provision and livelihood of Allah is better and permanent.

Allah commands not to look at the wealth and beauties of others especially disbelivers  because it causes greediness in minds and greediness for property takes away human beings from remembering Allah . Provision and livelihood of Allah is better and permanent. 

And do not extend your eyes toward that by which We have given enjoyment to [some] categories of them, [its being but] the splendor of worldly life by which We test them. And the provision of your Lord is better and more enduring.

Al Quran 20:131