Question 7: What is the ruling on wearing an engagement or wedding ring for both the bride and groom? The couple usually wears rings on which the spouse’s name and the engagement date are engraved. Is this a Bidd‘ah (innovation in religion) or does it have some origin in Islaam? Does the saying of the Messenger of Allaah (peace be upon him) to one of his Sahaabah (Companions): Seek anything (for her), even if it is only an iron ring denotes the permissibility of wearing a wedding ring.
Answer: First: What you have mentioned about engaged or married couples wearing rings in this manner has no origin in Islaam. In fact, it is a Bidd‘ah introduced by some ignorant Muslims with weak Faith who mimic the habits of Kaafirs (non-Muslims). This act is prohibited, as it involves imitation of the Kaafirs and the Prophet (peace be upon him) warned against this... read more here.