Sunan Ibn Majah, Volume 5, Book 37, Hadith 4146 (DarusSalam) ⓘ
It was narrated that Nu’man bin Bashir said: “I heard ‘Umar bin Khattab say: ‘I saw the Messenger of Allah writhing with hunger during the day, and he could not even find the worst of dates with which to fill his stomach.’”
حَدَّثَنَا نَصْرُ بْنُ عَلِيٍّ، حَدَّثَنَا بِشْرُ بْنُ عُمَرَ، حَدَّثَنَا شُعْبَةُ، عَنْ سِمَاكٍ، عَنِ النُّعْمَانِ بْنِ بَشِيرٍ، قَالَ سَمِعْتُ عُمَرَ بْنَ الْخَطَّابِ، يَقُولُ رَأَيْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ يَلْتَوِي فِي الْيَوْمِ مِنَ الْجُوعِ مَا يَجِدُ مِنَ الدَّقَلِ مَا يَمْلأُ بِهِ بَطْنَهُ .
also referenced under: Hadith 4146 (Reference) & Book 37, Hadith 4285 (In-Book)