You have to finish the Fatiha and try to recite it a bit faster even if you delay going to the Ruku position a bit. If this happens in every Rak’ah, there is something wrong either in your Imam or in your own recitation.

If i cannot complete reciting surah fathiha in the third rakah of any prayer(say ‘isha), and the imaam goes to rukoo’..wat should i do?

Prayer |