English translation
647. Kuraib, the freed-slave of Ibn 'Abbās, said that 'Abdullāh bin 'Abbās saw 'Abdullāh bin Al-Ĥārith praying while his hair was tied up behind him. So he stood behind him and started undoing it, while he ('Abdullāh bin Al-Ĥārith) allowed him to do so. When he finished (the prayer), he turned around to Ibn 'Abbās and said: "Why are you concerned about my head?" He replied: "I heard the Messenger of Allāh ﷺ say: 'The example of the one who does this is like the one who prays while he is bound with his hands tied behind him.'" (Sahih)
