ENOfficial
It was narrated that Ibn ‘Abbas said: “The Messenger of Allah (ﷺ) used to spend many nights in a row hungry and his family could find no supper, and usually their bread was barley bread.”
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مُعَاوِيَةَ الْجُمَحِيُّ، حَدَّثَنَا ثَابِتُ بْنُ يَزِيدَ، عَنْ هِلاَلِ بْنِ خَبَّابٍ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ كَانَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ يَبِيتُ اللَّيَالِيَ الْمُتَتَابِعَةَ طَاوِيًا وَأَهْلُهُ لاَ يَجِدُونَ الْعَشَاءَ وَكَانَ عَامَّةَ خُبْزِهِمْ خُبْزُ الشَّعِيرِ .
sunnah.com