And al-Husayn ibn Said narrated from Uthman ibn Isa, from Samaah, who said:
I (narrator) asked Imam عليه السلام about ‘a man who lied in the month of Ramadan.’ Imam عليه السلام said: “He has broken his fast, and upon him is its making up, while he is fasting; he makes up his fast and his ablution if he did so deliberately.”
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 4, p. 268