Sahih al-Bukhari 5547
Narrated `Uqba bin 'Amir Al-Juhani:
that the Prophet (ﷺ) distributed among his companions some animals for sacrifice (to be slaughtered on 
`Id-al-Adha). `Uqba's share was a Jadha'a (a six month old goat). `Uqba said, "O Allah's Messenger (ﷺ)! I get 
in my share of Jadha'a (a six month old ram)." The Prophet (ﷺ) said, "Slaughter it as a sacrifice."
حَدَّثَنَا مُعَاذُ بْنُ فَضَالَةَ، حَدَّثَنَا هِشَامٌ، عَنْ يَحْيَى، عَنْ بَعْجَةَ الْجُهَنِيِّ، عَنْ عُقْبَةَ بْنِ عَامِرٍ الْجُهَنِيِّ، قَالَ قَسَمَ النَّبِيُّ صلى الله عليه وسلم بَيْنَ أَصْحَابِهِ ضَحَايَا، فَصَارَتْ لِعُقْبَةَ جَذَعَةٌ‏.‏ فَقُلْتُ يَا رَسُولَ اللَّهِ صَارَتْ جَذَعَةٌ‏.‏ قَالَ ‏
"‏ ضَحِّ بِهَا ‏"‏‏.‏