Another believer, having read this letter, asked the beloved Guardian whether all birth control methods for any purpose were absolutely prohibited by Bahá'í Teachings. The secretary to the beloved Guardian wrote on his behalf on 4 February, 1937, as follows:
'The Guardian has ... given his careful consideration to your question regarding the Bahá'í view of birth control.
'...there is no reference whatsoever in the Writings on this subject. The utmost we can say is by way of reference from what Bahá'u'lláh has revealed regarding the nature, purpose and character of marriage.
'We, as Bahá'ís, are not therefore in a position either to condemn the practice of birth control or to confirm it.
'Birth control, however, when exercised in order to deliberately prevent the procreation of any children is against the Spirit of the Law of Bahá'u'lláh, which defines the primary purpose of marriage to be the rearing of children and their spiritual training in the Cause. The Universal House of Justice will have to consider this issue and give its verdict upon it.
The Universal House of Justice feels that the time has not yet arrived for legislation on this matter, and that these instructions provide sufficient guidance for the friends for the time being. (From a letter of the Universal House of Justice to the National Spiritual Assembly of the British Isles, July 13, 1967; Lights of Guidance)