Anas, see that nothing is given to this child until he is brought to Allah's Apostle ﷺ in the morning, so that he should chew some dates and touch his palate with it. I went to him in the morning and he was in the garden at that time having the mantle of Jauniyya over him and he was bus in cauterising (the camels) which had been brought to him (as spoils of war) in victory (over the enemy).  

لِي يَا أَنَسُ انْظُرْ هَذَا الْغُلاَمَ فَلاَ يُصِيبَنَّ شَيْئًا حَتَّى تَغْدُوَ بِهِ إِلَى النَّبِيِّ ﷺ يُحَنِّكُهُ قَالَ فَغَدَوْتُ فَإِذَا هُوَ فِي الْحَائِطِ وَعَلَيْهِ خَمِيصَةٌ جَوْنِيَّةٌ وَهُوَ يَسِمُ الظَّهْرَ الَّذِي قَدِمَ عَلَيْهِ فِي الْفَتْحِ  

Anas, see that nothing is given to this child until he is brought to Allah's Apostle ﷺ in the morning, so that he should chew some dates and touch his palate with it. I went to him in the morning and he was in the garden at that time having the mantle of Jauniyya over him and he was bus in cauterising (the camels) which had been brought to him (as spoils of war) in victory (over the enemy). (Using translation from Muslim 2119a)  

يَا أَنَسُ انْظُرْ هَذَا الْغُلَامَ فَلَا يُصِيبَنَّ شَيْئًا حَتَّى تَغْدُوَ بِهِ إِلَى النَّبِيِّ ﷺ فَيُحَنِّكُهُ قَالَ فَغَدَوْتُ بِهِ «فَإِذَا هُوَ ﷺ فِي الْحَائِطِ وَعَلَيْهِ خَمِيصَةٌ وَهُوَ يَسِمُ الظَّهْرَ الَّذِي قَدِمَ عَلَيْهِ فِي الْفَتْحِ»  

When Um Sulaim gave birth to a child. she said to me, "O Anas! Watch this boy carefully and do not give him anything to eat or drink until you have taken him to the Prophet ﷺ tomorrow morning for the Tahnik." So the next morning I took the child to the Prophet ﷺ who was sitting in a garden and was wearing a Huraithiya Khamisa and was branding the she-camel on which he had come during the Conquest of Mecca. (Using translation from Bukhārī 5824)   

لِي يَا أَنَسُ انْظُرْ هَذَا الْغُلَامَ فَلَا يُصِيبَنَّ شَيْئًا حَتَّى تَغْدُوَ بِهِ إِلَى رَسُولِ اللهِ ﷺ قَالَ فَغَدَوْتُ بِهِ فَإِذَا هُوَ فِي حَائِطٍ وَعَلَيْهِ خَمِيصَةٌ حَوْتَكِيَّةٌ وَهُوَ يَسِمُ الظَّهْرَ الَّذِي قَدِمَ عَلَيْهِ فِي الْفَتْحِ