The difference of opinion that is found
among the imams of Fiqh is based upon, among other things, a difference in the
principles that each of the imam's have in deducing rulings from the sources of
Sharia. Similarly the method of interpretation of a hadith results in different
rulings being deduced. This is not objectionable and such differences in
interpretation of the words of Rasulullah (PBUH) even existed among the
Companions (R.A.) which were not objected to by Rasulullah (PBUH) .
With regards to the Fatiha in salah, whereas there is a hadith that states that
the salah of a person who does not recite surah Fatiha in his salah is invalid,
there is also another hadith that states that when a person performs his prayer
behind an imam then the recitation of surah Fatiha of the imam is sufficient for
him. The Hanafi scholars rule that a follower should not recite surah Fatiha
based on the latter hadith and other similar verses or narrations that indicate
towards this. The difference of opinion that exists with regards to raising
one’s hands before ruku is also based on similar narrations that are found in
the books of hadith.
In a nut shell, each of the four schools has the proofs of their rulings and we
should follow the school of fiqh that we belong to, without engaging in debates
about these matters with those of a different school.
And Allah Ta'ala Knows Best