ANSWER: No problem in that but you must not say it during prayers or prescribed salutations.

Read more

ANSWER: He is not sinful if he doesn’t know, however if he comes to know about it, he must immediately stop doing it, otherwise he’ll be held accountable for it

Read more

ANSWER: Yes, it is highly recommended to seek refuge in Allah once in the beginning and to say bismillah before reciting each surah

Read more

ANSWER: No, the imam doesn’t take the liability if you miss a pillar like reciting fateha in the silent rakahs. He must offer an extra rakah after the imam says salam. 

Read more