The Book of Sacrifices
وَحَدَّثَنِيهِ الْقَاسِمُ بْنُ زَكَرِيَّاءَ، حَدَّثَنَا حُسَيْنُ بْنُ عَلِيٍّ، عَنْ زَائِدَةَ، عَنْ سَعِيدِ بْنِ مَسْرُوقٍ، بِهَذَا الإِسْنَادِ الْحَدِيثَ إِلَى آخِرِهِ بِتَمَامِهِ وَقَالَ فِيهِ وَلَيْسَتْ مَعَنَا مُدًى أَفَنَذْبَحُ بِالْقَصَبِThis hadith has been narrated on the authority of Sa'id b. Masruq with the same chain of transmitters with a slight variation of words
From Sahih Muslim, whose reports the scholars accept as authentic.