وَلَا يَسْتَنْجِي بِعَظْمٍ، وَلَا رَوْثٍ، وَلَا بِطَعَامٍ، وَلَا بِيَمِينِهِ
Translation: One must not cleanse with a bone, dung, food, or the right hand.
The four prohibitions have distinct grounds: bones and dung are specifically prohibited in hadith; food is to be respected rather than used for cleansing; and the right hand is kept away from this act.
These exclusions qualify the earlier general permission for stones and equivalent materials.
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Istinja: Methods, Preference and Juristic Differences
وَلَا يَسْتَنْجِي بِعَظْمٍ، وَلَا رَوْثٍ، وَلَا بِطَعَامٍ، وَلَا بِيَمِينِهِ
Translation: One must not cleanse with a bone, dung, food, or the right hand.
The four prohibitions have distinct grounds: bones and dung are specifically prohibited in hadith; food is to be respected rather than used for cleansing; and the right hand is kept away from this act.
These exclusions qualify the earlier general permission for stones and equivalent materials.