Sayyidina Abu Qatadab (RA) reported that it was said, “0 Messsenger of Allah! How is he who fasts always?” He said, “He neither kept fast not broke it”. (or, he said, “He never fasted and never broke fast)”.
[Ahmed22600, Muslim 1162, Abu Dawud 2425, Nisai 2379, Ibn e Majah 1713]