The Adas is the companion of garlic and onions . It is cold and dry and has two opposing effects, one that constipates and one that works as a laxative. The skin of the Adas is hot and dry in the third degree and also works as a laxative. The benefit in the lentils is concentrated in the peelings, and this is why whole lentils are more beneficial than ground lentils, less heavy on the stomach and less harmful.
Lentils cause black bile and harm the melancholy profoundly, along with having a negative effect on the nerves and the eyesight. Adas produces thick blood; and those who suffer from black bile will beget obsession, leprosy, quartran fever (a fever that occurs on should avoid eating it, for when they eat lentils excessively, the lentils every fourth day), and other ailments. However, eating lentils with chard and large amounts of grease will lessen their negative side effects. Also, one should avoid eating lentils with sweets, because lentils could cause clogs in the liver in this case. Further, eating. Adas on a regular basis causes harm to the eyesight because they are very dry. Lentils also cause urine retention, cold swellings and excessive flatulence. The best type of Adas is the fat, white` Adas that digests faster.
Some ignorant people claimed that Prophet Ibrahim (A.S) used to cook lentils for his guests. However. the Qur'an mentioned that he hosted his guests with a fat roasted calf.