Guidance on combination of food

A few Important Points

The Prophet (Sallallahu Alayhi wa Sallam) never mixed fish and milk, milk and sour foods or two hot dishes or two cold dishes, two sticky dishes, two constipating dishes, two laxative dishes, two heavy dishes, two liquid dishes, or two types of food that produced the same condition.

Also he (Sallallahu Alayhi wa Sallam) did not join between two types that caused opposite effects, such as constipating and diarrhea or easily digested foods with heavy foods, broiled with cooked foods, dry with fresh foods, eggs and milk or meat and milk.

He (Sallallahu Alayhi wa Sallam) never ate a food when it is rather hot, nor old food that was heated for him the next day. Further, he did not eat any salty or foods such as pickles. All these types of food are harmful and cause the health to change for the worst.

The Prophet (Sallallahu Alayhi wa Sallam) also used to neutralize the harm of some foods by their opposites such as when the food is hot, he neutralizes its effect with a cold food, and when it is dry with a wet food. E.g. eating ripe dates with cucumbers and dried dates with butter. 

He (Sallallahu Alayhi wa Sallam) also used to drink the water of soaked dates to neutralize the effect of heavy foods.

The Prophet (Sallallahu Alayhi wa Sallam) used to discourage sleeping just after eating food because it hardens the heart.

The Prophet (Sallallahu Alayhi wa Sallam) did not drink (water or milk) with his food, because the drink would spoil the food, especially when the water is hot or cold.

Excerpt: Healing with the Medicine of the Prophet (Sallallahu Alayhi wa Sallam) –Ibn Qayyim