حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا أَبُو عَبْدِ الصَّمَدِ، حَدَّثَنَا مَطَرٌ الْوَرَّاقُ، عَنْ شَهْرِ بْنِ حَوْشَبٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ كُنَّا نَتَحَدَّثُ عِنْدَ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ فَذَكَرْنَا الْكَمْأَةَ فَقَالُوا هِيَ جُدَرِيُّ الأَرْضِ ‏.‏ فَنُمِيَ الْحَدِيثُ إِلَى رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ فَقَالَ ‏"‏ الْكَمْأَةُ مِنَ الْمَنِّ وَالْعَجْوَةُ مِنَ الْجَنَّةِ وَهِيَ شِفَاءٌ مِنَ السَّمِّ ‏"‏ ‏.‏

It wasnarrated that Abu Hurairah said: “We used to narrate from theMessenger of Allah (PBUH) and mention truffles, and they said: ‘(Itis)the smallpox of the earth.’ When the Messenger of Allah (PBUH)was toldof what they were saying: he said: ‘Truffles are a type ofmanna, andthe Ajwah are from Paradise, and they are a healing frompoison.’” Translation Not Available

Book reference: Sunan Ibn Majah Book 31 Hadith 3455
Web reference: Sunan Ibn Majah Volume 4 Book 31 Hadith 3455