ابن حزم (۳۸۴ هجری - ۴۵۶ هجری) د اندلس (ھسپانیې) په قرطبه کې زېږېدلی و، کوم چې هغه وخت د ټول اروپا د علم مرکز و. هغه قرآن، حدیث او د مالکي فقه زده کړه وکړه. بیا هغه د شافعي فقه زده کولو لپاره لاړ، خو هغه یې پرېښود. وروسته، هغه د مسعود بن سلیمان څخه د ابو داود الظاهري د مذهب زده کولو لپاره لاړ.

Ibn Hazm (384 AH - 456 AH) was born in Cordoba in Andalusia (Spain), which at that time was the capital of science for all of Europe. He studied Qur‟an, Hadith, and Maliki Fiqh. He then moved to study Shafi‟i‟ Fiqh, and left it. Later on, he moved to study about the Madhab of Abu Dawud Az-Zahiri from Mas‟ood bin Sulayman.

ابن حزم قیاس را رد می‌کرد و تنها به ظاهر لفظ نص اکتفا می‌نمود، تا آنجا که اگر کسی در آب جمع‌شده‌ای بول می‌کرد، آن آب را نجس می‌دانست؛ اما اگر بول از خوک می‌بود، آن آب نجس شمرده نمی‌شد. ابن حزم با تقلید مخالفت می‌ورزید و مردم را به بحث و گفتگو در مسائل بر پایه دلیل فرا می‌خواند. این کار برای او در آن زمان از سوی برخی مردم دردسرهایی پدید آورد. مهم‌ترین کتاب او المحلّی است.

Ibn Hazm rejected Qiyas and took only the literal meaning of the text to the point that if a man urinated in a body of water; for example, he would consider for the water Najis (filthy); however, if the urine were from a pig, then the water would not be considered as najis. Ibn Hazm fought against Taqleed and called the people to discuss issues based on the Daleel. This caused him some problems from some people at that time. His most important book is Al-Muhalla.