مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2882
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn ‘Abbas (رضي الله عنه) said: I heard the Messenger of Allah (ﷺ) say: “The likeness of the one who prays with his hair gathered and twisted is that of one who prays with his hands tied behind his back."
Musnad Ahmad 2903A saheeh hadeeth; this is a da'eef isnad]