As regards your question concerning the principal residence and
subsidiary rulings relevant to it, we wish to let you know that in these
days it is not deemed advisable to enact detailed rulings for
Ḥuqúqu’lláh. Thus the friends are left free, and
whenever no definite rulings exist they may fulfil in each case that
which they understand from the texts, and may honour their
Ḥuqúqu’lláh obligations according to their own
judgement and the promptings of their own conscience.
(4 March 1984, written by the Universal House of Justice to an individual believer, translated from the Persian)