Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
abudawud:2832 – al-Ḥasan b. ʿAlī > ʿAbd al-Razzāq > Maʿmar > al-Zuhrī > Saʿīd

Fara' was the first animal born to them (the Arabs) which they sacrificed.  

أبو داود:٢٨٣٢ – حَدَّثَنَا الْحَسَنُ بْنُ عَلِيٍّ حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنِ الزُّهْرِيِّ عَنْ سَعِيدٍ قَالَ

الْفَرَعُ أَوَّلُ النِّتَاجِ كَانَ يُنْتَجُ لَهُمْ فَيَذْبَحُونَهُ  

See similar narrations below:

Collected by Aḥmad
ahmad:7751 – ʿAbd al-Razzāq > Maʿmar > al-Zuhrī > Ibn al-Musayyib > Abū Hurayrah

[Machine] The Messenger of Allah ﷺ said, "There is no 'fringe' or 'forelock', and the 'fringe' is the first offspring that they would breed and then slaughter it."  

أحمد:٧٧٥١ – حَدَّثَنَا عَبْدُ الرَّزَّاقِ حَدَّثَنَا مَعْمَرٌ عَنِ الزُّهْرِيِّ عَنِ ابْنِ الْمُسَيِّبِ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ لَا فَرَعَ وَلَا عَتِيرَةَ وَالْفَرَعُ أَوَّلُ النِّتَاجِ كَانَ يُنْتَجُ لَهُمْ فَيَذْبَحُونَهُ