Assalamualaikum Brother, Sharlife has provided detailed information regarding concerns related to Bay' al-Sarf and Riba at the "Shariah Judgement" section. You may also refer to the following link for further insights: https://sharlifeadvisory.com/insight/crypto-lending

Wa Alaikom Assalam Brother. Yes, it's on the "Shariah Judgement" I am commenting.

The basis on which it is built mixes Debt Riba with Sale Riba, which are two distinct things. Debt Riba is prohibited in any item even in lending normal commodities. In addition to that, the jusdgement does not account for important rules in Shariah such as the Rule of Cooperation قاعدة التعاون, and Sadd al-zharae' سد الذرائع.

When we talk about riba, whether riba al-duyun or riba al-bay', it only occurs if the commodities that are deemed as ribawi items. Historically, there was a term called fulus, which also acted as a medium of exchange, distinct from gold and silver. Islamic scholars deemed it as non-ribawi because one of the ‘illah of ribawi items is jins thaman ghaliban. Cryptocurrency has elicited a wide range of differing opinions among scholars. Therefore, it is important for us to approach the matter with an open heart. There is also a maxim that states: لا ينكر المختلف فيه إنما ينكر المجمع عليه ("Differences of opinion in matters of disagreement should not be condemned; only matters with consensus should be upheld.") It is normal for differences of opinion to arise in fiqh muamalat, given the nature of muamalat itself, which is: فقه المعاملات يقوم على أساس المبادئ العامة ("The jurisprudence of muamalat is based on general principles."). General principles meaning that it needs ijtihad by the Islamic scholars and occurance of different opinion in ijtihad is normal and acceptable as long as it is within furu' discussion.