The Kitáb-i-Aqdas - The Most Holy Book
Index term: choice of partner, under Marriage
k65.
It hath been laid down in the Bayán that marriage is dependent upon the consent of both parties. Desiring to establish love, unity and harmony amidst Our servants, We have conditioned it, once the couple's wish is known, upon the permission of their parents, lest enmity and rancour should arise amongst them. And in this We have yet other purposes. Thus hath Our commandment been ordained.
k107.
It is forbidden you to wed your fathers' wives. We shrink, for very shame, from treating of the subject of boys. Fear ye the Merciful, O peoples of the world! Commit not that which is forbidden you in Our Holy Tablet, and be not of those who rove distractedly in the wilderness of their desires.
q30.
 
Question: Concerning the verse: "he who would take into his service a maid may do so with propriety."
Answer: This is solely for service such as is performed by any other class of servants, be they young or old, in exchange for wages; such a maiden is free to choose a husband at whatever time she pleaseth, for it is forbidden either that women should be purchased, or that a man should have more wives than two.
q92.
 
Question: In a treatise in Persian on various questions, the age of maturity hath been set at fifteen; is marriage likewise conditional upon the reaching of maturity, or is it permissible before that time?
Answer: Since the consent of both parties is required in the Book of God, and since, before maturity, their consent or lack of it cannot be ascertained, marriage is therefore conditional upon reaching the age of maturity, and is not permissible before that time.