مچھلی اور دمِ مسفوح
It is also said that Hadith can abrogate (منسوخ) the ruling of Quran. Example they use is that dead Fish (murdaar) is halal. Please if you can explain?
To this the same linguistic principle will be applied as pointed out by Ghamidi Sahab in the above discussion on Maytah. It has to do with linguistics of دمِ مسفوح the same way they applied to Maytah. Where a word in literal sense can apply to many situations/scenarios, but when it comes to usage of that word in Arabic, it does not apply to certain situations. The same point was raised by Imam Zamakhshari as well: Discussion 36696 • Reply 36739
Then could you please explain the application of this meaning in this situation? If it is not literal meaning (flowing blood) then what would it be? Since this is established that fish do have (flowing) blood in them.