Al-Mughni (Arabic: المغني, meaning "The Enricher" or "The Sufficer") is not just a book of opinions. It is an encyclopedic work of comparative Fiqh written by the towering Hanbali scholar (1147-1223 CE / 541-620 AH).
If you need a specific ruling from Al-Mughni translated, you might consider using a large language model (like the one you are talking to now) by pasting the Arabic text and asking for a translation, as the AI can process classical Arabic Fiqh text. Al-mughni Ibn Qudamah English Pdf