وَعَنِ اِبْنِ عُمَرَ رَضِيَ اَللَّهُ عَنْهُمَا
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«مَنْ تَشَبَّهَ بِقَوْمٍ، فَهُوَ مِنْهُمْ»
“He who imitates any people (in their actions) is considered to be one of them.” Related by Abu Dawud and Ibn Hibban graded it as Sahih.
Bulugh al-Maram 1669, Book 16, The Comprehensive Book, Hadith 35. 1 min read