First: In the book the Economic System, in the discussion of insurance there is an example that confused me, which is “'Give your clothes to a cleaner and I guarantee them if they are damaged' ... there will be a guarantor, a person guaranteed for and a guaranteed person, who is the unknown cleaner. How does this differ from the insurance company?

“O you who have believed, prescribed for you is legal retribution for those murdered - the free for the free, the slave for the slave, and the female for the female. But whoever overlooks from his brother something, and then there should be a suitable follow-up and payment to him with good conduct. This is an alleviation from your Lord and a mercy. But whoever transgresses after that will have…

First: The Question: Oil prices rose on 24/5/2018 to striking numbers, where the price of Brent crude reached $79 a barrel, and Texas crude at $71 a barrel. This is after the drop witnessed in 2014. Does this mean that the world has entered a new era of high oil prices?

“…the likes of al-Qaffal were advocating the closing of the door of Ijtihad.” I have searched for this scholar but I have found only two who I have not seen in their biography that they have closed the door of ijtihad, namely the al-Qaffal al-Shashi and al-Qaffal al-Marwazi. Both are on the Shafi'i’s Fiqh. So, who is the intended scholar in the book?