Sunan Abi Dawud, Hadith 1977

The aforesaid tradition has also been transmitted by Hisham n. Hassan through a different chain of narrators. This version adds: He said to the barber: Start with the right side and shave it.

حَدَّثَنَا عُبَيْدُ بْنُ هِشَامٍ أَبُو نُعَيْمٍ الْحَلَبِيُّ، وَعَمْرُو بْنُ عُثْمَانَ الْمَعْنَى، - قَالاَ - حَدَّثَنَا سُفْيَانُ، عَنْ هِشَامِ بْنِ حَسَّانَ، بِإِسْنَادِهِ بِهَذَا قَالَ فِيهِ قَالَ لِلْحَالِقِ ‏ "‏ ابْدَأْ بِشِقِّي الأَيْمَنِ فَاحْلِقْهُ ‏" ‏ ‏.‏

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also referenced under: Hadith 1982 (DarusSalam)