 They don't eat the meat of pigs, dogs, donkeys and horses; they don't respect either the king of the country, nor their parents; they don't believe in supernatural powers, perform only sacrifice to heaven (Allah) and to no one else.According to their customs, every seventh day is a holiday (Jumu'ah), on which no trade and no currency transactions are done, whereas when they drink alcohol, and behave in a ridiculous and undisciplined way during the whole day.Within the confession of the Byzantines, there are beneficent medical doctors who know diarrhea; they could either recognize the disease before its outbreak, or could remove the worms by opening the brain.