We made no transgression but Khaybar was conquered. We, the Companions of the Messenger of Allah ﷺ, fell upon this plant. i e. garlic. because the people were hungry. We ate it to our heart's content and then made our way towards the mosque. The Messenger of Allah ﷺ sensed its odour and he said: He who takes anything of this offensive plant must not approach us in the mosque. The people said: Its (use) has been forbidden; its (use) bu been forbidden. This reached the Messenger of Allah ﷺ and he said: O people, I cannot forbid (the use of a thing) which Allah has made lawful, but (this garlic) is a plant the odour of which is repugnant to me. (Using translation from Muslim 565)
أَنْ فُتِحَتْ خَيْبَرُ وَقَعْنَا فِي تِلْكَ الْبَقْلَةِ يَعْنِي الثُّومَ فَأَكَلْنَا مِنْهَا أَكْلًا شَدِيدًا وَنَاسٌ جِيَاعٌ ثُمَّ رُحْنَا إِلَى الْمَسْجِدِ فَوَجَدَ رَسُولُ اللهِ ﷺ الرِّيحَ فَقَالَ مَنْ أَكَلَ مِنْ هَذِهِ الشَّجَرَةِ الْخَبِيثَةِ شَيْئًا فَلَا يَقْرَبْنَا فِي الْمَسْجِدِ فَقَالَ النَّاسُ حُرِّمَتْ حُرِّمَتْ فَبَلَغَ ذَلِكَ النَّبِيَّ ﷺ فَقَالَ أَيُّهَا النَّاسُ إِنَّهُ لَيْسَ بِي تَحْرِيمُ مَا أَحَلَّ اللهُ وَلَكِنَّهَا شَجَرَةٌ أَكْرَهُ رِيحَهَا