The gifts didn't belong to him though. They were the property of the state. That is why he had to pay the toshakhana for their ownership. The question is whether he paid a fair price for them. If he could immediately sell them for 5 times or more the price he paid, most people would agree he didn't pay a fair price for them. Since he was Prime Minister at that time, it is reasonable to question whether he was able to buy an asset of the Pakistani state at 20% or lower of market price only because of his influence. If you don't think that is corruption, then almost no one in Pakistan is corrupt because they all operate using the same modus operandi to a greater or lesser extent.