The Messenger of Allah ﷺ entered the mosque and saw a rope stretched between two pillars. He asked, "What is this rope?"They replied, "It belongs to Zaynab. She prays, and when she grows weary, she holds onto it."The Prophet ﷺ said, "Untie it. Let one of you pray as long as he is energetic, and when he grows tired, let him sit down."
أخبرنا عمران بن موسى عن عبد الوارث قال حدثنا عبد العزيز
أن رسول الله ﷺ دخل المسجد فرأى حبلا ممدودا بين ساريتين فقال ما هذا الحبل فقالوا لزينب تصلي فإذا فترت تعلقت به فقال النبي ﷺ حلوه ليصل أحدكم نشاطه فإذا فتر فليقعد
Bukhari narrated it in the Book of Tahajjud, Chapter on What Is Disliked Regarding Excessive Strictness in Worship, hadith no. 1150, and Muslim, and so on, hadith no. 784, from the Book of the Prayer of Travelers, Chapter on the Merit of Consistent Deeds Such as Night Prayer and Otherwise, from Abdul-Warith bin Saeed, through him.