والتصعيد والتقطير مما يصلح الْمِيَاه الرَّديئَة فَإِن لم يُمكن ذَلِك فالطبخ فَإِن الْمَطْبُوخ على مَا شهد بِهِ الْعلمَاء أقل نفخاً وأسرع انحداراً
Purification of water. Bad water may be purified by sublimation and distillation. If that is not feasible, boiling will suffice, for boiled water, as the learned know, is less likely to cause inflammation and passes more rapidly through the body