مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2550
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
‘Abdul-ʻAzeez - i.e., Ibn Rufai' - said: Someone who heard Ibn 'Abbas (رضي الله عنه) told me that he said: The Prophet (ﷺ) did not halt between 'Arafat and Muzdalifah except to pass water.
Musnad Ahmad 2563Saheeh, because of corroborating evidence; this is a da’eef