Hadithcore
Hadith #2313030
sahih· Al-Albani

Nafi' reported that a group of the people of Iraq visited Ibn 'Umar. They saw a gold crown on one of their servants and looked at one another. He remarked, "How quick you are to see evil!"

حَدَّثَنَا خَلاَّدٌ، قَالَ‏:‏ حَدَّثَنَا عَبْدُ الْعَزِيزِ، عَنْ نَافِعٍ، أَنَّ نَفَرًا مِنْ أَهْلِ الْعِرَاقِ دَخَلُوا عَلَى ابْنِ عُمَرَ، فَرَأَوْا عَلَى خَادِمٍ لَهُمْ طَوْقًا مِنْ ذَهَبٍ، فَنَظَرَ بَعْضُهُمْ إِلَى بَعْضٍ، فَقَالَ‏:‏ مَا أَفْطَنَكُمْ لِلشَّرِّ‏.‏

References2 variants
Sunnah.com reference
Book 56, Hadith 2
Arabic/English book reference
Book 56, Hadith 1306