Hadith: I saw how the Messenger of Allah (may Allah’s peace and blessings be upon him) would pass a whole day writhing (from hunger), not even finding bad dates to fill his stomach with

عن النعمان بن بشير رضي الله عنهما قال: ذكر عمرُ بن الخطاب رضي الله عنه ما أصَاب الناس من الدنيا، فقال: لقد رأيت رسول الله صلى الله عليه وسلم يَظَلُّ اليومَ يَلْتَوِي ما يَجدُ من الدَّقَلِ ما يَمْلأُ به بَطنه.
[صحيح] - [رواه مسلم]

An-Nu‘mān ibn Bashīr (may Allah be pleased with him) reported that ‘Umar ibn al-Khattāb (may Allah be pleased with him) mentioned what the people had gained of worldly pleasures and said: "I saw how the Messenger of Allah (may Allah’s peace and blessings be upon him) would pass a whole day writhing (from hunger), not even finding bad dates to fill his stomach with."
Sahih/Authentic. - [Muslim]

Explanation

‘Umar (may Allah be pleased with him) mentioned what the people achieved of worldly pleasures when Allah granted them victory in their conquests, and what they accumulated of spoils. So he said that he had seen the Messenger of Allah (may Allah's peace and blessings be upon him) twisting from hunger without finding anything with which to fill his stomach, not even bad dates.