It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that Sayyiduna Umar bin al-Khattab (may Allah be pleased with him) disliked taking a bath with water heated by the sun, and he used to say: It causes the disease of baras (leprosy).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 12
Hadith Gradingمحدثین:ضعيف جدًا
Hadith Takhrij«ضعيف جدًا۔ أخرجه الشافعي في الأم والمسند كما في التلخيص 1/22»