When One Is in Doubt about Fajr
Issue No. 1426- If a person is in doubt whether it is maghrib or not, he cannot terminate his fast, although if one was to do so, he should offer both qaḍā as well as kaffāra. However, if he doubts whether it is fajr or not, he can perform the acts which invalidate fast, it is also not obligatory on him to investigate.
