The prohibition of wearing gold for men in Islam ===================================== `Abdullah bin `Abbas (May Allah be pleased with them) reported:
Messenger of Allah (PBUH) saw a man wearing a gold ring. So he (the Prophet (PBUH)) pulled it off and threw it away, saying,
"One of you takes a live coal, and puts it on his hand.''
It was said to the man after Messenger of Allah (PBUH) had left:
"Take your ring (of gold) and utilize it,''
whereupon he said:
"No, by Allah, I would never take it when Messenger of Allah (PBUH) has thrown it away" [Muslim].
We learn from this Hadith that wearing of gold ring is prohibited for men and so is wearing of golden ornament by them.
It is very unfortunate indeed that nowadays it has become a popular fashion to present men gold ring on their marriage and they wear it with great pride.
It is a very dangerous custom and must be altogether shunned for two reasons.
Firstly, it is an unnecessary formality and burden to exchange presents and hold big feasts on betrothal ceremony.
It is also open to objection in Islamic law. Secondly, to give and take unlawful things is all the more forbidden and is akin to building one sin over another. ================================== The actual reason as to why Muslim men are not allowed to wear gold is because of the prohibition to that effect mentioned by our Prophet Mohammad Sallallahu 'Alayhi wa Sallam.
As far as the wisdom behind that prohibition goes, we can say that Islam is a religion that focuses on the afterlife.