Do we have to say Ameen whenever we hear Surah Fatiha or is it only limited to Salat?
In the name of Allah, Most Compassionate, Most Merciful
Ameen should be said whenever one reads Surah Fatiha and also when one hears another person read it.
Imam Bukhari (RA) has narrated on the authority of Abu Hurairah (RA) that Rasulullah (SAW) said
(Sahih Al Bukahri Hadeeth No.781)
In the narration of Muslim it is stated
Hafiz Bin Hajar says in Fathul Bari that the first Hadith shows that Ameen should be said when reciting Surah Fatiha whether in Salah or not and the second one shows that Ameen should be said when hearing the Surah whether in Salah or not.
The meaning of Ameen is “O Allah accept!” so whenever Surah Fatiha is recited or heard Ameen should be said, also during duas ameen should be said with conviction.
It is narrated in a Hadith in Sunan Abu Dawood
And Allah knows best