The size of the work (over 6,000 pages) makes a full translation a multi-million dollar, decade-long project. However, partial translations exist:
Al-Mughni ibn Qudamah is a renowned Arabic book on Islamic jurisprudence (Fiqh) written by Imam Ibn Qudamah al-Maqdisi (1147-1189 CE). The book is considered one of the most important and influential works in the Hanbali school of thought. al mughni ibn qudamah pdf
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You can find a PDF version of Al-Mughni Ibn Qudamah online through various sources: The size of the work (over 6,000 pages)