Is the marriage contract considered valid if it was concluded in the presence of two witnesses and the guardian, the husband placed his hand in the guardian’s hand, the guardian recited the formula "I marry you (to)" mentioning the wife’s name, and the husband responded with "I accept," but the dowry was not mentioned in the verbal contract formula, and it was agreed upon later for a small amount?

If the marriage contract is concluded without mention of the mahr (dowry), the contract is valid, and the wife is entitled to a mahr al-mithl (a dowry equivalent to that given to women of her status). This is called nikah al-tafwid (delegated marriage), and it occurs either by delegating the bud' (sexual intimacy, i.e., without mentioning the mahr), or by delegating the mahr (i.e., mentioning it but without specifying its amount). This is supported by the words of Allah the Almighty: (There is no blame upon you if you divorce women before consummating the marriage or before specifying for them a dowry) and the statement of Ibn Mas'ud, may Allah be pleased with him, concerning Barwa' bint Washiq. The mahr al-mithl is determined by the judge to prevent disputes, but the spouses may agree upon a specific amount without referring to the judge, because the right belongs to them.