There are those (eg. Chabad) who have a custom to wait an hour after eating dairy before eating meat.
I was told that the source is in the Zohar.
Can anyone point to the exact origin of this custom?
The Zohar that’s referred to is in Parashat Mishpatim 125a which talks about eating meat and milk בשעתא חדא, which can be understood as “within one hour of each other”.