Time of Intending to Fast
As to Ramadan fast and that to be observed in a specific day, one should intend fasting the night before — the early night up to morning adhān and for non-specific fasts, e.g. qaḍā’ fasts and absolute nadhr from the early previous night until ‘noon’ of the day of fasting.
Time of Intending to Fast
Time of Intending to Fast
Time of Intention for Obligatory Fasts
52. In normal situations, what is the time of Intention for Obligatory Fasts?
A: As to Ramadan fast and that to be observed in a specific day, one should intend fasting the night before — the early night up to morning adhān and for non-specific fasts, e.g. qaḍā’ fasts and absolute nadhr from the early previous night until ‘noon’ of the day of fasting.
Time of Intention for Mustaḥabb Fasts
53. In a mustaḥabb Fast, any time he decides to fast, he may intend and his fast is valid provided that he has not performed any fast invalidator at all.
Delay in Fast Intention
54. Because fast starts at the beginning of fajr, fast intention should not be postponed beyond fajr even for a moment and you’d better intend to fast before fajr arrives.
57. If one has done no fast invalidator and wants to observe an obligatory fast other than Ramadan one, like a qaḍā’/kaffārah fast, he may intend before ‘noon’ and his fast is valid.
58. If one delays — not beyond the noon — intending of a hired fast whether on purpose or unintentionally while he has done no fast invalidator, is his fast valid?
A: In case of hiring, one should act according to hire deed and what is common among the believers; otherwise, it is not valid and the hired person is not entitled to the compensation.
Source: Hadana adopted from the Istiftaat of the Grand Ayatollah Khamenei