مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2208
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn 'Abbas (رضي الله عنه) said: The Messenger of Allah (ﷺ) said: "This Stone (i.e., the Black Stone) will come on the Day of Resurrection with two eyes with which it will see and a tongue with which it will speak; it will testify in the favour of the one who touches it with the proper manner and attitude.”
Musnad Ahmad 2215A hasan hadeeth]