Why do muslims yell/chant 'Allahu Akbar" in so many different situation?

Re: Why do muslims yell/chant 'Allahu Akbar" in so many different situation?

Very easy to remember..just remember height “unchai” with Akbar..so the opposite is subhanAllah

I heard it also when plane taking off..first pilots says Allahu akbar Allahu akbar{because its going up (bulandi)} twice if i am not mistaken and then surah zukhruf verse as a dua e safar!!