مُسْنَدُ أَحْمَدَ
Musnad Ahmad 4303
Musnad of Abdullah bin Mas'ood
It was narrated that Masrooq said: 'Abdullah would tell us something from the Messenger of Allah (ﷺ), then he would pause and his colour would change, and he would say: Like this or close to this.
Musnad Ahmad 4333Its isnad is saheeh]