Reference: Siyar A’laam an-Nubalaa v18 p222
said:
The lips of Abul-Hasan ad-Daawoodee would not cease from [engaging in] the remembrance of Allaah.
It was narrated that when the barber wanted to trim his moustache, he said to him:
‘Stop moving your lips.’
And he responded:
‘Tell time [to pause], so I can then stop [moving my lips].’
