Full Idea
Hegel criticised the categorical imperative for lacking any roots in the moral habits and practices which develop in actual historical communities.
Gist of Idea
The categorical imperative lacks roots in a historical culture
Source
report of Georg W.F.Hegel (Elements of the Philosophy of Right [1821]) by Andrew Bowie - German Philosophy: a very short introduction 1
Book Reference
Bowie,Andrew: 'German Philosophy: very short intro' [OUP 2010], p.17
A Reaction
This is the gist of Alasdair MacIntyre's defence of virtue theory, against rational Enlightenment ethics. Charles Taylor made the link to Hegel.