Ibn Qayyim in "Medicine of the Prophet" said, "Grapes are among the best and most beneficial fruits, and they are eaten fresh, dried, green and ripe. Further, grapes are a type of fruit and nutritious food, along with their benefits as a remedy and a drink. Wetness and hotness are among the characteristics of grapes just as other grains. The best type of grapes is the big grapes that are full of juice, while white grapes are better than the black grapes when both are equal in sweetness. In addition, eating fresh grapes two or three days after harvest is better than eating them immediately otherwise they cause diarrhoea and flatulence.” 

He also said, “They are a source of good nutrition, just like raisins and figs, and In addition strengthen the body. When the seeds of the grapes are removed, the grapes become a more effective laxative. Eating grapes excessively causes headache, unless one, in addition, eats sour pomegranate … The best types of fruits are three: grapes, dates and figs.”

Grapes are hot and dry: food qualities