If you really want to look for proofs, you can google it. I am an Arab and since the the mid 90s Qatar has been providing all Sunni islamic groups from MB, Hamas and Al Qaeda with all kinds of support (money, media, bribing western politicians, etc...)
So you’re saying you have all the inside scoop on terrorism just because you’re an Arab? You should get a job in the US intelligence agencies, they seem to have similar thoughts!
They are both the biggest sponsors of terrorism then come Turkey and Pakistan. The key difference between Qatar and Saudi Arabia is that Qatar always supports the more extremist faction in every conflict. Saudi Arabia may not do that in every case. For instance, Saudi Arabia funds MB in Syria and supported the revolution against them in Egypt.