Prayer › Supplications related to the athan (the call to prayer)
Dua during the adhan — response at ‘hayya ‘ala’
One repeats just as the mu-aththin (one who calls to prayer) says, except when he says:
ِحَـيَّ عَلَـى الصَّلاةِ (أَو) حَـيَّ عَلَـى الْفَـلاح
[Come to Prayer, or Come to Success]
Instead, one should say:
لَاحَـوْلَ وَلَا قُـوَّةَ إِلاَّ بِاللَّـه
La hawla wala quwwata illa billah
Translation
There is no might nor power except with Allah.
When to recite
During the adhan, at the call to prayer and success.
Source / Reference
Hisnul Muslim 22