It was narrated from Abu Sa'eed Al-Khudri:

"A man came from Al-Bahrain to the Prophet ﷺ and greeted him with Salam, but he did not return his greeting. He was wearing a gold ring on his hand, and was wearing a silken Jubbah. He took them off, then he greeted him with Salam, and he returned his greeting. Then he said: 'O Messenger of Allah, I came to you just now, and you turned away from me.' He said: 'You had a coal of fire on your hand.' He said: 'Then I have brought many coals.' He said: 'What you have brought with you is no better for us than the stones of Al-Harrah, but it is a temporary convenience of this world.' He said: 'What should I use for a ring?' He said: 'A ring of iron or silver or brass.'"

أَخْبَرَنِي عَلِيُّ بْنُ مُحَمَّدِ بْنِ عَلِيٍّ الْمِصِّيصِيُّ، قَالَ حَدَّثَنَا دَاوُدُ بْنُ مَنْصُورٍ، - مِنْ أَهْلِ ثَغْرٍ ثِقَةٌ - قَالَ حَدَّثَنَا لَيْثُ بْنُ سَعْدٍ، عَنْ عَمْرِو بْنِ الْحَارِثِ، عَنْ بَكْرِ بْنِ سَوَادَةَ، عَنْ أَبِي النَّجِيبِ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، قَالَ أَقْبَلَ رَجُلٌ مِنَ الْبَحْرَيْنِ إِلَى النَّبِيِّ ﷺ فَسَلَّمَ فَلَمْ يَرُدَّ عَلَيْهِ وَكَانَ فِي يَدِهِ خَاتَمٌ مِنْ ذَهَبٍ وَجُبَّةُ حَرِيرٍ فَأَلْقَاهُمَا ثُمَّ سَلَّمَ فَرَدَّ عَلَيْهِ السَّلاَمَ ثُمَّ قَالَ يَا رَسُولَ اللَّهِ أَتَيْتُكَ آنِفًا فَأَعْرَضْتَ عَنِّي . فَقَالَ " إِنَّهُ كَانَ فِي يَدِكَ جَمْرَةٌ مِنْ نَارٍ " . قَالَ لَقَدْ جِئْتُ إِذًا بِجَمْرٍ كَثِيرٍ . قَالَ " إِنَّ مَا جِئْتَ بِهِ لَيْسَ بِأَجْزَأَ عَنَّا مِنْ حِجَارَةِ الْحَرَّةِ وَلَكِنَّهُ مَتَاعُ الْحَيَاةِ الدُّنْيَا " . قَالَ فَمَاذَا أَتَخَتَّمُ قَالَ " حَلْقَةً مِنْ حَدِيدٍ أَوْ وَرِقٍ أَوْ صُفْرٍ " .