What quantity of blood or pus is considered offensively noticeable ('fahish')?
Chapter on Praying with Impurity and Other Matters
Al-Mughni
Book of Prayer
Primary text
The apparent position of the Hanbali school, following Ibn Abbas and Sa'id ibn al-Musayyab, is that 'minor' means what does not appear offensively noticeable to the heart or mind of the individual. Ibn 'Aqil specified that what is considered offensive is based on the general perception of average people. Qatadah, Al-Nakha'i, Sa'id ibn Jubayr, Hammad ibn Abi Sulayman, Al-Awza'i, and the People of Opinion consider an amount equivalent to the size of a dirham (silver coin) to be offensive, based on a narration concerning blood in prayer.
Supporting text
The narrations citing a specific measure like the dirham are considered fabricated (mawdu') by Al-Hafiz Abu Al-Fadl Al-Maqdisi. Furthermore, the principle is that if no specific limit is set in the Law (Shari'ah), the ruling reverts to established custom ('urf), like in matters of dispersal or taking possession. Since the evidence cited for a specific amount is not sound, the standard reverts to what is offensive in the heart.