Want to get All your past sins forgiven? Say Ameen when the Imam says Ameen at the end of Surah Al Fatiha! :) Narrated Abu Hurairah, Allah's Messenger [sallAllaahu 'alyhi wasallam] said, "When the Imam says: 'Ghair-il-Maghd ubi 'Alaihim Walad-Dallin (i.e. not the path of those who earn Your Anger, nor the path of those who went astray (1.7)), then you must say, 'Ameen', for ifone's utterance of 'Ameen' coincides with that of the angels, then his past sins will be forgiven." (Sahih Al Bukhari Book #60, Hadith #2) Narrated Abu Hurairah, Allah's Messenger [sallAllaahu 'alyhi wasallam] said, "When the Imam says 'Ameen', then you should all say 'Ameen', for the angels say 'Ameen' at that time, and he whose 'Ameen' coincides with the 'Ameen' of the angels, all his past sins will be forgiven." (Sahih Al Bukhari Book #75, Hadith #411)