It was narrated from Zuhri that:Mahmud bin Rabi' remembered that the Prophet spat into a bucket from a well that belonged to them
Hadith No. 660
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih
Shuaib Al Arnaut:
Sahih
Zubair Ali Zai:
Sahih