The Kitáb-i-Aqdas
92.We have conditioned it … upon the permission of their parents   ¶65
In a letter written on his behalf, Shoghi Effendi has commented on this provision of the law:
Bahá’u’lláh has clearly stated the consent of all living parents is required for a Bahá’í marriage. This applies whether the parents are Bahá’ís or non-Bahá’ís, divorced for years or not. This great law He has laid down to strengthen the social fabric, to knit closer the ties of the home, to place a certain gratitude and respect in the hearts of the children for those who have given them life and sent their souls out on the eternal journey towards their Creator.1
1 October 25, 1947 : Lights of Guidance, p. 370, no. 1235