Hawzah News Agency– Is it permissible to use the Sahm-e Imãm (a.s.) without seeking the permission of the marja‘ if a person can ascertain the need of any kind for its use with which the Imam (a.s.) would be pleased?
Answer: It is not permissible; and one cannot attain the approval of the Imam (a.s.) by using his portion of the Khums without seeking the permission of the most learned Marja‘ —in that it is possible that the Marja’s permission is part of the approval of the Imam (a.s.).
Source: https://www.sistani.org/