Ammar bin Abi ‘Ammar told us that 'Umar bin al-Khattab رضي الله عنه said:

The Messenger of Allah ﷺ saw a ring of gold on a man's hand and he said: “Throw it away,” so he threw it away and acquired a ring of iron. He said: `This is even worse.` Then he acquired a ring of silver, and he did not say anything,

حَدَّثَنَا عَفَّانُ، حَدَّثَنَا حَمَّادٌ، أَنْبَأَنَا عَمَّارُ بْنُ أَبِي عَمَّارٍ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ، رَضِيَ اللَّهُ عَنْهُ قَالَ إِنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ رَأَى فِي يَدِ رَجُلٍ خَاتَمًا مِنْ ذَهَبٍ فَقَالَ أَلْقِ ذَا فَأَلْقَاهُ فَتَخَتَّمَ بِخَاتَمٍ مِنْ حَدِيدٍ فَقَالَ ذَا شَرٌّ مِنْهُ فَتَخَتَّمَ بِخَاتَمٍ مِنْ فِضَّةٍ فَسَكَتَ عَنْهُ‏.‏