Do we have any Hadith which says that Honey should NOT be mixed with warm or Hot Milk or with any other hot or warm liquid.
If there is any tradition, Kindly send reference.

I have not seen any hadith that prohibits from that, so Islamically it’s fine to mix honey with a hot liquid. However, some studies do claim that hot water changes the composition of honey and makes it less effective. When I was studying in Qom I would also hear that from the people, but there is no hadith that states that.