Narrated Anas ibn Malik:

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.

حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ، حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ، حَدَّثَنَا الْحَجَّاجُ بْنُ حَسَّانَ، قَالَ دَخَلْنَا عَلَى أَنَسِ بْنِ مَالِكٍ فَحَدَّثَتْنِي أُخْتِي الْمُغِيرَةُ، قَالَتْ وَأَنْتَ يَوْمَئِذٍ غُلاَمٌ وَلَكَ قَرْنَانِ أَوْ قُصَّتَانِ فَمَسَحَ رَأْسَكَ وَبَرَّكَ عَلَيْكَ وَقَالَ
" احْلِقُوا هَذَيْنِ أَوْ قُصُّوهُمَا فَإِنَّ هَذَا زِيُّ الْيَهُودِ " .