Giving the meat, skin and blankets of the Hadi in charity; the butcher should not be given any of it; It is permissible to delegate someone else to offer the sacrifice Sahih Muslim 1317 a
Arabic hadith text
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، أَخْبَرَنَا أَبُو خَيْثَمَةَ، عَنْ عَبْدِ الْكَرِيمِ، عَنْ مُجَاهِدٍ، عَنْ عَبْدِ، الرَّحْمَنِ بْنِ أَبِي لَيْلَى عَنْ عَلِيٍّ، قَالَأَمَرَنِي رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ أَقُومَ عَلَى بُدْنِهِ وَأَنْ أَتَصَدَّقَ بِلَحْمِهَا وَجُلُودِهَا وَأَجِلَّتِهَا وَأَنْ لاَ أُعْطِيَ الْجَزَّارَ مِنْهَا قَالَ " نَحْنُ نُعْطِيهِ مِنْ عِنْدِنَا " .
Translation
'All (Allah be pleased with him) reperted
Allah's Messenger (ﷺ) put me in charge of his sacrificial animals, that I should give their flesh. skins and saddle cloths as sadaqa, but not to give anything to the butcher, saying: We would pay him ourselves.