المعنى الاصطلاحي :

The lote (buckthorn) tree whose leaves are mixed with water after being crushed to be used in cleaning and in "ruqyah" (Shariah-approved method for healing).

الشرح المختصر :

"Sidr" (lote tree) is from the buckthorn family that grows in the desert. They are bushy. They could exceed twelve meters in height and have deep roots. Their leaves are oval like those of olive trees. They have small greenish flowers and small black fruits. They are cultivated mainly in tropical and semi-tropical areas. They live for one hundred and twenty years. It has several names: "nabk", "ghasl", "ardaj", "zafzoof", and "‘arj". "Sidr" has many medical benefits and could also be used like soap. It is of two types: 1. Wild "sidr": It grows in deserts. Its leaves are unusable and it bears inedible fruits. The Arabs call it the "dāl". 2. Rural "sidr": It grows in rural areas. Its leaves are usable and it bears edible fruits.

التعريف اللغوي المختصر :

"Sidr" (sing. sidrah): lote tree. It has small oval leaves, small greenish flowers, and small black fruits. It is of two types: one that grows in rural areas and its leaves are usable, and the second grows in the desert and its leaves are unusable.