Universal 50:

Original: In agreement of adnominal modifiers with their heads (NP internal agreement), the agreement features may include case but not person.
Standardized: The agreement features of modifiers in NP-internal agreement may include case but not person.
Keywords: noun, modifier, case, person, agreement
Domain: inflection, syntax
Type: unconditional
Status: achronic
Quality: absolute
Basis: ?
Source: C. Lehmann 1988: 57, Plank 1991c: 537 (review)

Counterexamples: Nenets (Samoyedic, Uralic) has attributive agreement in person-number, with identical possessor person-number markers occurring on the dependent (quantifier, an adjective, or even a noun in modifying function) and the head. If the NP in addition carries an overt case marker, it is also distributed over head and dependent:mgarka-myi tyor-myi big-1SG cry-1SG ‘my loud cry’syidya-mta nguda-mta two-ACC.3SG hand-ACC.3SG‘his two hands (ACC)’ (I. Nikolaeva, p.c.)

FP