I had a hanging lock of hair. My mother said to me: I shall not cut it, for the Messenger of Allah ﷺ used to stretch it out and hold it.  

كَانَتْ لِي ذُؤَابَةٌ فَقَالَتْ لِي أُمِّي لاَ أَجُزُّهَا كَانَ رَسُولُ اللَّهِ ﷺ يَمُدُّهَا وَيَأْخُذُ بِهَا  

Al-Hajjaj ibn Hassan said: We entered upon Anas ibn Malik. My sister al-Mughirah said: You were a boy in those days and you had two locks of hair. He (Anas) rubbed your head and invoked blessing on you. He said: Shave them (i.e. the locks) or clip them, for this is the fashion of the Jews.  

وَأَنْتَ يَوْمَئِذٍ غُلاَمٌ وَلَكَ قَرْنَانِ أَوْ قُصَّتَانِ فَمَسَحَ رَأْسَكَ وَبَرَّكَ عَلَيْكَ وَقَالَ احْلِقُوا هَذَيْنِ أَوْ قُصُّوهُمَا فَإِنَّ هَذَا زِيُّ الْيَهُودِ