Hadithcore
Sahih al-Bukhari, 6458
sahih

Narrated `Aisha:

A complete month would pass by during which we would not make a fire (for cooking), and our food used to be only dates and water unless we were given a present of some meat.

حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا يَحْيَى، حَدَّثَنَا هِشَامٌ، أَخْبَرَنِي أَبِي، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتْ كَانَ يَأْتِي عَلَيْنَا الشَّهْرُ مَا نُوقِدُ فِيهِ نَارًا، إِنَّمَا هُوَ التَّمْرُ وَالْمَاءُ، إِلاَّ أَنْ نُؤْتَى بِاللُّحَيْمِ‏.‏

References2 variants
In-Book Reference
Book 81, Hadith 47
USC-MSA web (English) reference
Vol. 8, Book 76, Hadith 465 (deprecated numbering scheme)