ما هي درجة صحة حديث: "استعدوا للبرد كما تستعدوا للعدو"؟

There is no prophetic hadith with this wording. It was not narrated from the Prophet, peace and blessings be upon him, nor was it mentioned by Islamic jurists. Therefore, it is not permissible to narrate it, for whoever narrates a hadith that he believes to be a lie is one of the liars, as stated in the hadith: "Whoever narrates a hadith from me that he considers to be a lie, then he is one of the liars." This is intended to emphasize the severity of lying, and that whoever narrates something he predominantly believes to be a lie is a liar.