When any one of you intending to sacrifice the animal enters in the month (of Dhu'l-Hijja) he should not get his hair or nails touched (cut). It was said to Sufyan that some of the (scholars) did not deem this hadith to be Maffu'. He said: But I deem it as Marfu' (i. e. chain of narration traceable right up to the Holy Prophet).  

أَنَّ النَّبِيَّ ﷺ قَالَ إِذَا دَخَلَتِ الْعَشْرُ وَأَرَادَ أَحَدُكُمْ أَنْ يُضَحِّيَ فَلاَ يَمَسَّ مِنْ شَعَرِهِ وَبَشَرِهِ شَيْئًا قِيلَ لِسُفْيَانَ فَإِنَّ بَعْضَهُمْ لاَ يَرْفَعُهُ قَالَ لَكِنِّي أَرْفَعُهُ  

If anyone of you intends to offer sacrifice he should not get his hair cut or nails trimmed.  

إِذَا دَخَلَ الْعَشْرُ وَعِنْدَهُ أُضْحِيَّةٌ يُرِيدُ أَنْ يُضَحِّيَ فَلاَ يَأْخُذَنَّ شَعْرًا وَلاَ يَقْلِمَنَّ ظُفُرًا  

that Messenger of Allah ﷺ said: "If anyone of you has seen the crescent of Dhū al-Ḥijjah and one of you want to offer a sacrifice ˹on the Day of Naḥr˺, then he should hold back ˹cutting˺ his hair and nails."  

أَنَّ النَّبِيَّ ﷺ قَالَ: «إِذَا رَأَيْتُمْ هِلاَلَ ذِي الْحِجَّةِ وَأَرَادَ أَحَدُكُمْ أَنْ يُضَحِّيَ فَلْيُمْسِكْ عَنْ شَعْرِهِ وَأَظْفَارِهِ۔»  

This hadith has been narrated on the authority of 'Amr b. Muslim with the same chain of transmitters.  

عَنْ عُمَرَ أَوْ عَمْرِو بْنِ مُسْلِمٍ بِهَذَا الإِسْنَادِ نَحْوَهُ  

He who has a sacrificial animal with him whom (he intends) to offer as sacrifice, and he enters the month of Dhu'I-Hijja, he should not get his hair cut or nails trimmed until he has sacrificed the animal.  

سَمِعْتُ أُمَّ سَلَمَةَ زَوْجَ النَّبِيِّ ﷺ تَقُولُ قَالَ رَسُولُ اللَّهِ ﷺ مَنْ كَانَ لَهُ ذِبْحٌ يَذْبَحُهُ فَإِذَا أُهِلَّ هِلاَلُ ذِي الْحِجَّةِ فَلاَ يَأْخُذَنَّ مِنْ شَعْرِهِ وَلاَ مِنْ أَظْفَارِهِ شَيْئًا حَتَّى يُضَحِّيَ  

While we were in a bathroom just before 'Id al-Adha some of the persons tried to remove the hair with the help of hair-removing chemicals. Thereupon some of the people owning the bath (or some of the people sitting therein) said that Sa'id b. Musayyib did not approve of it, or he prohibited it. Then I met Sa'id b. Musayyib and made a mention of that to him, whereupon he said: O my nephew, this is the hadith which has been forgotten, and abandoned. Umm Salama, the wife of Allah's Apostle ﷺ, narrated to me Messenger of Allah ﷺ having said as narrated above.  

كُنَّا فِي الْحَمَّامِ قُبَيْلَ الأَضْحَى فَاطَّلَى فِيهِ نَاسٌ فَقَالَ بَعْضُ أَهْلِ الْحَمَّامِ إِنَّ سَعِيدَ بْنَ الْمُسَيَّبِ يَكْرَهُ هَذَا أَوْ يَنْهَى عَنْهُ فَلَقِيتُ سَعِيدَ بْنَ الْمُسَيَّبِ فَذَكَرْتُ ذَلِكَ لَهُ فَقَالَ يَا ابْنَ أَخِي هَذَا حَدِيثٌ قَدْ نُسِيَ وَتُرِكَ حَدَّثَتْنِي أُمُّ سَلَمَةَ زَوْجُ النَّبِيِّ ﷺ قَالَتْ قَالَ رَسُولُ اللَّهِ ﷺ بِمَعْنَى حَدِيثِ مُعَاذٍ عَنْ مُحَمَّدِ بْنِ عَمْرٍو  

Amr b. Muslim al-Jundani reported that Ibn Musayyib had told him that it was Umm Salama, the wife of Allah's Apostle ﷺ, who had informed him of that as narrated above.  

أَخْبَرَهُ أَنَّ أُمَّ سَلَمَةَ زَوْجَ النَّبِيِّ ﷺ أَخْبَرَتْهُ وَذَكَرَ النَّبِيَّ ﷺ بِمَعْنَى حَدِيثِهِمْ