Full Idea
We should not use 'in virtue of' where it might express a reflexive relation, such as identity. Since grounding is a relation of determination, and closely linked to the concept of explanation, it is irreflexive and asymmetric.
Gist of Idea
Avoid 'in virtue of' for grounding, since it might imply a reflexive relation such as identity
Source
Paul Audi (Clarification and Defense of Grounding [2012], 3.2)
Book Reference
'Metaphysical Grounding', ed/tr. Correia,F/Schnieder,B [CUP 2012], p.102
A Reaction
E.g. he says someone isn't a bachelor in virtue of being an unmarried man, since a bachelor just is an unmarried man. I can't disagree. 'Determination' looks like the magic word, even if we don't know how it cashes out.