Question 12: I seek your Fatwaa’ (legal opinion issued by a qualified Muslim scholar) regarding the ruling on accepting to conclude a marriage contract between a suitor and a Waliy (a legally accountable person acting for a woman regarding marriage) in the presence of four witnesses. This marriage is announced to some people only. Would this announcement suffice? Is the marriage contract valid?
Answer: If the reality is as you have mentioned, the contract is valid, and the announcement will suffice even if the witnesses are only two people... read more here.