It was narrated from 'Abdul Jabbar bin Wa'il that his father said: A bucket was brought to the Prophet; he rinsed his mouth and spat into it, and it was like musk or better than musk, and he rinsed his nostrils outside the bucket.
It was narrated from Zuhri that: Mahmud bin Rabi' remembered that the Prophet spat into a bucket from a well that belonged to them