Mishkat al-Masabih
She said that sometimes a month would come in which they did not kindle a fire, [For cooking] having only dates and water, unless a little meat was brought. (Bukhari and Muslim.)
وَعَنْهَا قَالَتْ: كَانَ يَأْتِي عَلَيْنَا الشَّهْرُ مَا نُوقِدُ فِيهِ نَارًا إِنَّمَا هُوَ التَّمْرُ وَالْمَاءُ إِلَّا أَنْ يُؤْتَى بِاللُّحَيْمِ
Reference