مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3022
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that The Messenger of Allah (ﷺ) said: "The Black Stone is from Paradise. It was whiter than snow until the sins of the people of shirk turned it black.”
Musnad Ahmad 3046Its isnad is da'eef]