Ismāʻīl narrated to us: ʻAbd al-ʻAzīz ibn Ṣuhayb narrated to us, from Anas ibn Mālik, who said, “The Messenger of Allah (ﷺ) ﷺ entered the mosque and found a rope stretched between two pillars. He asked, ‘What is this?’ They said, ‘It belongs to Zaynab; she prays, and when she grows weary or tired she holds on to it.’ He said, ‘Untie it. Let one of you pray while he is fresh, and when he grows weary or tired let him sit down.’” Reference: Musnad Aḥmad 81