Council of Chalcedon
Council of Chalcedon, Canon XXII
Definition of faith and received canons; reception qualifications retained; not the full proceedings
Canon XXII
It is not lawful for clergymen, after the death of their bishop, to seize what belongs to him, as has been forbidden also by the ancient canons; and those who do so shall be in danger of degradation from their own rank.
Translation: Henry R. Percival, The Seven Ecumenical Councils, NPNF II.14 (1900), via CCEL.
Source: Council of Chalcedon (CCEL)