The advantage of having good research assistants
Oh, wouldn't it be great to have RA's that find stray pages from government accounts and bring them to you? From Ibn Khaldun, discussing how judges and priests generally don't become rich (emphasis added).
I discussed this with an excellent man. He disagreed with me about it. But some stray leaves from the account books of the government offices in the palace of al-Ma'mun came into my hand. They gave a good deal of information about income and expenditures at that time. Among the things I noticed, were the salaries of judges, prayer leaders, and muezzins. I called the attention of (the person mentioned) to it, and he realized that what I had said was correct. He became a convert to (my opinion), and we were both astonished at the secret ways of God with regard to His creation and His wise (planning) concerning His worlds.