Narrated Urwa:

Aisha said to me, "O my nephew! We used to see the crescent, and then the crescent and then the crescent in this way we saw three crescents in two months and no fire (for cooking) used to be made in the houses of Allah's Apostle. I said, "O my aunt! Then what use to sustain you?" 'Aisha said, "The two black things: dates and water, our neighbors from Ansar had some Manarh and they used to present Allah's Apostle some of their milk and he used to make us drink."

- Sahih Al-Bukhari Vol. 3: No. 741