The commentary limits overgeneralization: blood remaining in properly slaughtered meat and veins is not treated like flowing blood; fish blood is pure in the stated sound view; donkey and mule saliva are pure in the sound position, although their leftover water has a separate doubtful-purifying ruling studied earlier.
Opening interactive controls...
Important Qualifications
Physical Impurities: Heavy and Light Categories
The commentary limits overgeneralization: blood remaining in properly slaughtered meat and veins is not treated like flowing blood; fish blood is pure in the stated sound view; donkey and mule saliva are pure in the sound position, although their leftover water has a separate doubtful-purifying ruling studied earlier.