I was told that the Prophet ﷺ said, "Whoever prays twelve units of prayer in a day, Allah will build for him," or "a house will be built for him in Paradise."
حدثنا بهز قال حدثنا حماد بن يزيد قال حدثنا عاصم بن بهدلة عن أبي صالح أن
حدثت عن النبي ﷺ أنه قال من صلى في يوم ثنتي عشرة ركعة بنى الله له أو بني له بيت في الجنة
Its isnad is sahih. Muslim reported it, 1/503 no. 728, in the Book of Travelers, Abu Dawud, 2/18 no. 1250, in the Book of Prayer, Nasai, 3/264 no. 1797, in the Book of Night Prayer, Ibn Majah, 1/361 no. 1141, and Darimi, 1/397 no. 1438, all of them in the Book of Prayer, and Ibn Khuzayma, 2/203 no. 1187, and Abd bin Humayd, 448 no. 1552.