Kurr Water

Furu' al-Din

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Kurr water (Arabic: الماء الكر) is a specific quantity of water that does not become najis if it comes into contact with najis things and it also can clean (make tahir) the things which have become najis. All jurists agree that 480 kg of water is kurr.

Quantity

According to majority of jurists an amount of water that fills a container, each side of which is three and half spans of a normal hand is kurr water. Hence, the volume of kurr water is forty two and seven eighth cubic spans of the hand. Other quantities such as thirty six or twenty seven cubic spans of the hand, 377 kg or 384 kg or … are mentioned as well. Some said, "All jurists agree that 480 kg of water is kurr."

Rulings

• There are two ways for establishing that a quantity of water is kurr,

1. One becomes sure about that.
2. Two just men say so.

There is disagreement among jurists whether the saying of one man or even a reliable man is enough for determining kurr or not.

• Kurr water is a type of mutlaq water (unadulterated) and is one of mutahhirat (purifying agents). It also does not become najis if it comes into contact with najis, unless its color, smell or taste changes due to its contact with najis. For this water to become tahir again, the changes in color, smell or taste must disappear and another tahir kurr water must be connected to it and mixed with it. There is disagreement in becoming tahir by mere connection to another tahir kurr water without mixing.

• If something that has become najis is washed once in kurr water, it will become tahir. Shi'a jurists famously believe that there is no need to wash something that has become najis by urine or a najis dish more than once by kurr water. Likewise, majority of recent jurists say one does not have to wash things that water penetrates them such as clothes, rug, etc. more than once in kurr water in order to make them tahir.

• If it is doubted whether a kurr water is still kurr, the rulings of kurr water must be applied to it; however, if it is doubted whether a qalil water has become kurr, the rulings of qalil water must be applied to it.