Each narration below is shown in its original Arabic alongside an English translation, with its chapter, number, and reference.
" يَا فَاطِمَةُ احْلِقِي رَأْسَهُ وَتَصَدَّقِي بِزِنَةِ شَعْرِهِ فِضَّةً "
That Ali bin Abi Talib said: "The Messenger of Allah (ﷺ) had the 'Aqiqah for Al-Hasan with one sheep, and said: 'O Fatimah! Shave his head and give the weight of his hair in silver as charity.'" He said: "So I weighed it, and it was the weight of a Dirham or a bit of a Dirham."
حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ الْخَلاَّلُ، حَدَّثَنَا أَزْهَرُ بْنُ سَعْدٍ السَّمَّانُ، عَنِ ابْنِ عَوْنٍ، عَنْ مُحَمَّدِ بْنِ سِيرِينَ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي بَكْرَةَ، عَنْ أَبِيهِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم خَطَبَ ثُمَّ نَزَلَ فَدَعَا بِكَبْشَيْنِ فَذَبَحَهُمَا . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
From his father, that the Prophet (ﷺ) gave a Khutbah, then he descended and called for two rams and slaughtered them.
" بِسْمِ اللَّهِ وَاللَّهُ أَكْبَرُ هَذَا عَنِّي وَعَمَّنْ لَمْ يُضَحِّ مِنْ أُمَّتِي "
"I attended the Eid Al-Adha' with the Prophet (ﷺ) at the Musalla. When he finished his Khutbah, he descended from his Minbar and was given a male sheep. The Messenger of Allah (ﷺ) slaughtered it with his hand and said: 'Bismillah, Wa Allahu Akbar, this from me and whoever does not slaughter from my Ummah.'"
" الْغُلاَمُ مُرْتَهَنٌ بِعَقِيقَتِهِ يُذْبَحُ عَنْهُ يَوْمَ السَّابِعِ وَيُسَمَّى وَيُحْلَقُ رَأْسُهُ "
That the Messenger of Allah (ﷺ) said: "The boy is mortgaged by his 'Aqiqah; slaughtering should be done for him on the seventh day, he should be given a name, and his head should be shaved."
حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ الْخَلاَّلُ، حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ، أَخْبَرَنَا سَعِيدُ بْنُ أَبِي عَرُوبَةَ، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، عَنْ سَمُرَةَ بْنِ جُنْدَبٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم نَحْوَهُ . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ . وَالْعَمَلُ عَلَى هَذَا عِنْدَ أَهْلِ الْعِلْمِ يَسْتَحِبُّونَ أَنْ يُذْبَحَ عَنِ الْغُلاَمِ الْعَقِيقَةُ يَوْمَ السَّابِعِ فَإِنْ لَمْ يَتَهَيَّأْ يَوْمَ السَّابِعِ فَيَوْمَ الرَّابِعِ عَشَرَ فَإِنْ لَمْ يَتَهَيَّأْ عُقَّ عَنْهُ يَوْمَ حَادٍ وَعِشْرِينَ وَقَالُوا لاَ يُجْزِئُ فِي الْعَقِيقَةِ مِنَ الشَّاةِ إِلاَّ مَا يُجْزِئُ فِي الأُضْحِيَةِ .
Another chain with similar meaning.
" مَنْ رَأَى هِلاَلَ ذِي الْحِجَّةِ وَأَرَادَ أَنْ يُضَحِّيَ فَلاَ يَأْخُذَنَّ مِنْ شَعْرِهِ وَلاَ مِنْ أَظْفَارِهِ "
That the Prophet (ﷺ) said: "Whoever sees the crescent of Dhul-Hijjah, and wants to slaughter a sacrifice he should not take from his hair nor from his nails."