The Messenger of Allah ﷺ said, "One whose animals are sick should not bring them to water alongside one whose animals are healthy."
قال رسول الله ﷺ: لا يورد ممرض على مصح.
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Bukhari narrated it in "Medicine" (5774) and Muslim in "Greetings," both from the hadith of Ibn Shihab, from Abu Salama bin Abdullah bin Awf, from Abu Hurairah, and he mentioned it.Umar bin Khattab said, "If a man marries a woman who has madness, or leprosy, or vitiligo, or a bony obstruction, and he has consummated the marriage with her, then she is entitled to the dowry because he has touched her, and he may claim it back from the guardian." Bayhaqi narrated it (7/135), and the wording is his, and Saeed bin Mansur (818) also narrated it, but his version does not mention the bony obstruction.This is evidence that a marriage may be annulled because of certain defects, namely madness, leprosy, vitiligo, a bony obstruction, a rupture, amputation of the male member, and impotence. This is the view of the majority of scholars, except Abu Hanifa, who said, "The marriage is only annulled because of amputation or impotence."As for what was reported from Zayd bin Kaab bin Ujra, who said, "The Messenger of Allah ﷺ married a woman from Banu Ghifar. When she came to him and removed her garments, he saw a white patch on her side, so he said, 'Put your clothes back on and return to your family,'" this is not sahih.Saeed bin Mansur narrated it (829) from Abu Muawiya, who said, "Jameel bin Zayd Tai narrated to us," from Zayd bin Kaab bin Ujra, and he mentioned it.Imam Ahmad narrated it (16032) through another route from Jameel bin Zayd, who said, "I kept company with an elderly man from the Ansar, who mentioned that he had been a companion of the Prophet, called Kaab bin Zayd or Zayd bin Kaab, and he narrated to me," and he mentioned it.In it is Jameel bin Zayd. Yahya bin Main said, "Jameel bin Zayd is not trustworthy." Abu Abdul-Rahman Nasai said, "He is not strong." Bukhari said in Tarikh Awsat (1177), "His hadith is not sahih."There is disagreement over his narration. It has been reported from him in this manner, and it has also been reported from him from Saeed bin Zayd, and from Ibn Umar, and from Abdullah bin Kaab, and it has also been said Kaab bin Zayd or Zayd bin Kaab, and other names besides these have been mentioned. This is evidence of the inconsistency of his narration, in addition to its weakness.As for his saying "kashh," it means the waist, as stated in Nihaya.