This is part 2 of 2 of “The Book of Sacrifices”, book 35 of Sahih Muslim — Hadith 5,118–5,126. The book is long enough that it is split across 2 pages so each one stays quick to load; the parts run in order and are linked at the foot of the page.
Umm Salama reported Allah's Messenger (ﷺ) having said this: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)
Umm Salama reported (these words) directly from Allah's Messenger (ﷺ):If anyone has in his possession a sacrificial animal to offer as a sacrifice (on 'Id al-Adha), he should not get his hair cut and nails trimmed after he has entered the first days of Dhu'l Hijja
Amr b. Muslim b. 'Ammar al-Laithi reported: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 Allah's Messenger (ﷺ) having said as narrated above
وَحَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى، وَأَحْمَدُ بْنُ عَبْدِ الرَّحْمَنِ بْنِ أَخِي ابْنِ وَهْبٍ، قَالاَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَخْبَرَنِي حَيْوَةُ، أَخْبَرَنِي خَالِدُ بْنُ يَزِيدَ، عَنْ سَعِيدِ بْنِ أَبِي هِلاَلٍ، عَنْ عُمَرَ، بْنِ مُسْلِمٍ الْجُنْدَعِيِّ أَنَّ ابْنَ الْمُسَيَّبِ، أَخْبَرَهُ أَنَّ أُمَّ سَلَمَةَ زَوْجَ النَّبِيِّ صلى الله عليه وسلم أَخْبَرَتْهُ . وَذَكَرَ النَّبِيَّ صلى الله عليه وسلم بِمَعْنَى حَدِيثِهِمْ .
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
Abu Tufail 'Amir b. Withila reported:I was in the company of 'Ali b. Abi Talib, when a person came to him, and said: What was it that Allah's Apostle (ﷺ) told you in secret? Thereupon he (liadrat 'All) was enraged and said: Allah's Apostle (ﷺ) did not tell me anything in secret that he hid from people, except that he told me four things. He said: Com- mader of Faithful, what are these? He said: Allah cursed him who cursed his father; Allah cursed him who sacrificed for anyone besides Allah; and Allah cursed him who accommodates an innovator (in religion) ; and Allah cursed him who changed the minarets (the boundary lines) of the land
Abu Tufail reported:We said to 'Ali b. Abi Talib: Inform us about something which Allah's Messenger (ﷺ) told you in secret, whereupon he said: He told me nothing in secret which he bid from people, but I heard him say: Allah cursed him who sacrificed for anyone besides Allah; and cursed him who accommodated an innovator; and Allah cursed him who cursed his parents and Allah cursed him who changed the boundary lines (of the land possessed by him)
Abu Tufail reported:'Ali was asked whether Allah's Messenger (ﷺ) had showed special favour (by disclosing to him) a thing (which he kept secret from others). Thereupon he said: Allah's Messenger (ﷺ) singled us not for (disclosing to us) anything (secret) which he did not make public, (but those few things) which lie in the sheath of my sword. He drew out the written document contained in it and on that (it was mentioned): Allah cursed him who sacrificed for anyone else besides Allah; and Allah cursed him who stole the signposts (demarcating the boundary lines of the) land; and Allah cursed him who cursed his father; and Allah cursed him who accommodated an innovator (in religion)
Text from the open hadith-api dataset. Hadith numbering follows that edition and can differ slightly from a printed copy — check the Arabic against a trusted mushaf of hadith before relying on a reference.