Marriage & full consent of parents

The validity of a Bahá'í marriage is dependent upon the free and full consent of all four parents. The freedom of the parents in the exercise of this right is unrestricted and unconditioned. They may refuse their consent on any ground, and they are responsible for their decision to God alone. 

- Shoghi Effendi  (From a letter written on behalf of Shoghi Effendi to an individual believer, dated 19 March 1938; The Compilation of Compilations, vol. I, Preserving Baha’i Marriages)