مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1625
Musnad of Sa'eed bin Zaid bin 'Amr bin Nufail
It was narrated from Sa"eed bin Zaid bin "Amr bin Nufail that the Prophet of Allah(ﷺ) said: "Truffle are a kind of manna, and its water is a healing for the eyes.”
Musnad Ahmad 1625Sahih (Darussalam) [ al-Bukhari (4478) and Muslim (2049)]