What is the ruling on dealing with yellow stains, or those that resemble feces, found on carpets and cushions, given the doubt as to whether they are ritually impure (najāsa) or something else, and the inability to distinguish due to their old age and lack of odor? And what is required if wet feet have stepped on them, and the impurity might spread throughout the house, knowing that there are children who might be responsible for these stains?
As long as you are not certain that those spots are impurities from urine, feces, or other defilements, they are considered pure; for the fundamental principle regarding things is purity, not impurity. As Al-Sa'di said in his poem on jurisprudential maxims: "The origin of our affairs is purity And the earth, clothes, and stones." Therefore, it is advisable to disregard such whisperings (waswas).
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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