Prominent Muslim scholars and financial advisors released a white paper declaring Ethereum halal, or permissible, according to Islamic Sharia law. The clarity for Muslim purchasers may stimulate additional demand for Ether.
source :
https://cryptoslate.com/ethereum-halal-muslim-scholars-eth-demandi hope this news will be good for eth price, and make the price grow more than $200 again
I don't think this will have much effect on the price of ethereum, halal certification in Islam in certain countries is only recognized & legalized by Islamic Council , because there are many opinions about cryptocurrency according to shariah experts and the council opinion is final.
Well this is not the first "halal" cryptocurrency. I don't think this could really affect the prices.
Just check what happened to Stellar - XLM since it was declared halal in July of 2018.