The Prophet ﷺ used to set up a small enclosure with a mat at night and pray inside it, then spread it out during the day to sit on. People began gathering around the Prophet ﷺ to pray along with his prayer, until their numbers grew. He came out and said, "People, take on only as much of the religious deeds as you can sustain, for Allah does not tire until you tire. The deeds most beloved to Allah are those done consistently, even if they are few."
أن النبي ﷺ كان يحتجر حصيرا بالليل فيصلي، ويبسطه بالنهار فيجلس عليه، فجعل الناس يثوبون إلى النبي ﷺ فيصلون بصلاته حتى كثروا فأقبل فقال: يا أيها الناس خذوا من الأعمال ما تطيقون، فإن الله لا يمل حتى تملوا، وإن أحب الأعمال إلى الله ما دام وإن قل.
Bukhari narrated it in the Book of Clothing (5861), and Muslim in the Book of the Prayer of Travelers (782), both from the hadith of Ubaydullah, from Saeed bin Abu Saeed, from Abu Salama, from Ayesha, and he related it. The wording given is Bukhari's, and Muslim's wording is close to it.