Allah's Messenger (ﷺ) said: The cattle (sheep, cows, camels, etc.) suffering from a disease should not be mixed up with healthy cattle, (or said: "Do not put a patient with a healthy person ). " (as a precaution).
Reference: Sahih al-Bukhari 5771 In-book : Book 76, Hadith 85 USC-MSA web (English) : Vol. 7, Book 71, Hadith 665 (deprecated)
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