As far as I know during Tun tenure, he did not allow his sons to join politics and also no to do business in Malaysia. His sons only got involved in local business after he stepped down.

When your father is a PM for a country, which bank would not give loan if your father is a guarantor. Zahid is not even UMNO president before but his daughter bought a hotel. That is not small amount also.  Anyway SPRM has received asset declaration from Tun and his son and Azam said they were satisfied. I don't know if it is still under review or not.

Same or not it does not matter. Now SPRM is under Anwar. Why did Anwar keep extending Azam service. During Tun time, SPRM was under Latifah, not Azam, anyway. Why Zahid case get holiday and many others under Anwar. Obviouslty he needs support. Well Zahid is his best friend anyway. So, much about fighting corruption. 

Sorry I'm not your adik. I'm probably can be your dad