899 – Sahl ibn Saʿd – may Allah be pleased with him – said: “The Prophet ﷺ arranged a man’s marriage to a woman for a ring made of iron.” Al-Hakim recorded it, and it is a portion of the lengthy narration cited earlier at the beginning of the Book of Marriage. ⦗1⦘

Hadith grading:
The root narration is found in the two Sahihs. The author explains that this wording is merely a segment of the longer report mentioned at the start of the marriage section, that longer report being in both Sahih collections. In it, the Prophet ﷺ did not actually perform the marriage in exchange for an iron ring; rather, he permitted the ring to serve as the bridal dower, and that is sufficient to establish the legal ruling.