مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1543
Musnad Abu Ishaq Sa'd bin Abi Waqqas
It was narrated from ‘Amir bin Sa"d that his father Sa"d said: I heard the Messenger of Allah (ﷺ) say: "If one of you spits in the mosque, let him bury his sputum lest it get onto the skin or garment of a believer and annoy him."
Musnad Ahmad 1543Hasan (Darussalam) []