In Ramadan, one whose duty is to make ghusl before morning adhān but is unable to do so
Fast Invalidators
To Remain Junub until Morning Adhān
In Ramadan, one whose duty is to make ghusl before morning adhān but is unable to do so, e.g. as the time is too short or water is harmful for him, he should make tayammum instead of ghusl.
Source: Hadana adopted from the Istiftaat of the Grand Ayatollah Khamenei
