It was narrated that from Ibn Abi Qatadah, from Abu Qatadah, that: he caught an onager and brought it to his companion's who were in Ihram whereas he was not, and they ate from it. Then they said to one another: "Let us ask the Messenger of Allah (ﷺ) about it," So we asked him and he said:" You did well" Then he said to us: "Do you have anything left of it?" We said: "Yes." He said: "Give us some "So we brought him some, and he ate from it, while he was in Ihram.
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنَا مُحَمَّدُ بْنُ وَهْبٍ، قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ سَلَمَةَ، قَالَ حَدَّثَنِي أَبُو عَبْدِ الرَّحِيمِ، قَالَ حَدَّثَنِي زَيْدُ بْنُ أَبِي أُنَيْسَةَ، عَنْ أَبِي حَازِمٍ، عَنِ ابْنِ أَبِي قَتَادَةَ، عَنْ أَبِيهِ أَبِي قَتَادَةَ، قَالَ أَصَابَ حِمَارًا وَحْشِيًّا فَأَتَى بِهِ أَصْحَابَهُ وَهُمْ مُحْرِمُونَ وَهُوَ حَلاَلٌ فَأَكَلْنَا مِنْهُ فَقَالَ بَعْضُهُمْ لِبَعْضٍ لَوْ سَأَلْنَا رَسُولَ اللَّهِ صلى الله عليه وسلم عَنْهُ . فَسَأَلْنَاهُ فَقَالَ " قَدْ أَحْسَنْتُمْ " . فَقَالَ لَنَا " هَلْ مَعَكُمْ مِنْهُ شَىْءٌ " . قُلْنَا نَعَمْ . قَالَ " فَاهْدُوا لَنَا " . فَأَتَيْنَاهُ مِنْهُ فَأَكَلَ مِنْهُ وَهُوَ مُحْرِمٌ .
sunnah.com