حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنِ الزُّهْرِيِّ، عَنْ عِيسَى بْنِ طَلْحَةَ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ سُئِلَ عَمَّنْ ذَبَحَ قَبْلَ أَنْ يَحْلِقَ أَوْ حَلَقَ قَبْلَ أَنْ يَذْبَحَ قَالَ ‏"‏ لاَ حَرَجَ ‏"‏ ‏.‏

It wasnarrated from ‘Abdullah bin ‘Amr that the Prophet (PBUH) wasaskedabout a man who slaughtered his sacrifice before shaving hishead, orwho shaved his head before slaughtering his sacrifice, and hesaid: “There is no harm in that.” Translation Not Available

Book Ref: Sunan Ibn Majah Book 25 Hadith 3051
Web Ref:  Sunan Ibn Majah Vol 4 Book 25 Hadith 3051