The source of the prohibition to place meat and dairy utensils in one sink

Hello, Honorable Rabbi! I saw that you answered on the site that one should not place dairy and meat utensils together if there is only one sink. Indeed, I know that this is written in the book of kashrut, but I couldn't find the source. I know one must be careful not to leave them submerged for 24 hours in the same water or in boiling water from a primary vessel. But why is it forbidden to place dirty meat and dairy utensils together in the sink?

Hello

The source of this ruling is found in the later authorities, and we will mention some of them.

Derech Teshuva:
See in BLY sk"c where it is written from the Maharshal that the world has adopted the custom not to place any fatty food with dairy food in one box unless there is a separation between them. And not only simultaneously, but also consecutively, to avoid placing a utensil with dairy food in a place where a utensil with meat food stood, lest meat food falls on the box and then dairy food is placed on it, and sometimes the pot will be hot and it will not be noticed. See there, and thus the custom has spread in all our countries that everyone has a special place to place meat utensils and food and a special place for dairy utensils and food, and this is the custom of the elders.

Yad Avraham:
However, Israel is holy, and they have the custom to designate a separate bench for meat and a separate one for dairy.

Derech Teshuva, Siman 95, S"K 91.

Yad Avraham, Yoreh De'ah, Siman 88, Seif 1

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