In a dream it is a helper and assistant. Losing one of the two kidneys is losing that helper, and losing both together is a sign of hardness of heart. The two kidneys are the seat of wealth, of correctness, of eloquence and of error. If he sees that his kidneys are fatty, he is a rich man, possessed of speech, correctness and cunning; their leanness is his poverty and lack of judgment. Kidneys signify brothers and other relatives and children. The two kidneys are a man of might and strength who works in the ruler's service and brings out money which he spends on the people. They also signify a person's fingers, so whatever happens to them is in the fingers, and vice versa: if a person's fingers are dislocated, it goes back to his kidneys.
Dream meaning · al-Nabulsi
Kidney كلية
Source: al-Nabulsi, Ta'tir al-Anam fi Ta'bir al-Manam, p. 290. English translation by iDreamBot. Quran verses: Quran.com, Saheeh International.