كتاب الحج
15  
The Book of Pilgrimage
(64)
Chapter: It is recommended to send the sacrificial animal to the Haram for one who does not intend to go there himself; It is reommended to garland it and to make the garland, but the one who sends it does not enter a state of Ihram, and nothing is forbidden to him because of that
(64)
باب اسْتِحْبَابِ بَعْثِ الْهَدْىِ إِلَى الْحَرَمِ لِمَنْ لاَ يُرِيدُ الذَّهَابَ بِنَفْسِهِ وَاسْتِحْبَابِ تَقْلِيدِهِ وَفَتْلِ الْقَلاَئِدِ وَأَنَّ بَاعِثَهُ لاَ يَصِيرُ مُحْرِمًا وَلاَ يَحْرُمُ عَلَيْهِ شيء بِذَلِكَ
Sahih Muslim 1321 d

Abd al-Rahman b. al-Qasim reported on the authority of his father that he heard 'A'isha (Allah be pleased with her) saying:

I used to weave garlands for the sacrificial animals of Allah's Messenger (ﷺ) with these hands of mine, but he (Allah's Apostle) neither avoided anything nor gave up anything (which a Muhrim should avoid or give up).
وَحَدَّثَنَا سَعِيدُ بْنُ مَنْصُورٍ، حَدَّثَنَا سُفْيَانُ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ، عَنْ أَبِيهِ، قَالَ سَمِعْتُ عَائِشَةَ، تَقُولُ كُنْتُ أَفْتِلُ قَلاَئِدَ هَدْىِ رَسُولِ اللَّهِ صلى الله عليه وسلم بِيَدَىَّ هَاتَيْنِ ثُمَّ لاَ يَعْتَزِلُ شَيْئًا وَلاَ يَتْرُكُهُ.
Reference : Sahih Muslim 1321d
In-book reference : Book 15, Hadith 401
USC-MSA web (English) reference : Book 7, Hadith 3035
  (deprecated numbering scheme)