Are the duas (supplications) said in ruku’ (bowing down) and sajdah (prostration) of prayer fard?
There are some scholars who think that saying the dua "Subhana Rabbiyal Azim and Subhana Rabbiyal Ala" in ruku’ and prostration of prayer is fard because, it is mentioned as a command in the Quran. If we accept it like that and for example, if we say "Subhana Rabbiyal Ala" in ruku’ by mistake or vice versa in prostration, does it become necessary to perform the prayer again as qada because of abandoning the fard?
Dear Brother / Sister,
The two dhikrs in the Qur'an mentioned in the question are not related to prayer. However, since the Prophet (pbuh) said, "Say the first dhikr in ruku and say the second one in prostration", Hanbalis say, "It is fard to do so" based on the rule that "a command imposes the decree of being fard" and they also say it is fard to say it once and it is sunnah to say it three times.
The other three sects have concluded that they are sunnah by saying “Not every command imposes the decree of fard; the decree is understood with other evidences and indications, at that point, the evidences and indications show that it is sunnah to say those duas.”
According to the sect of those who say sunnah, even if they are abandoned or their places are changed by mistake, the prayer does not need to be performed again; the prayer is valid.
Questions on Islam
- Is it permissible to recite the invocations of ruku and sajdah one time which we normally recite three times?
- Is it possible to say prayers (duas) in a different language during prostration (sajdah)?
- Does sajda as-sahw (prostration of forgetfulness) become necessary if we change the places of the invocations that we recite in ruku and sajdah?
- What is the criterion for the length of the ruku and sajdah in prayers? How many times can invocations be recited at ruku (bowing down in prayer) and sajdah (prostration) at most?
- What are the meanings of the deeds done in prayer, supplications (dua) and glorifications (tasbihat) in and outside prayer? Is it permissible to say / read them more or fewer times?
- What is the criterion for dua (supplication) in prostration? Is it permissible to pray for something worldly in prostration or to say something other than "subhana rabbiyal a'la"? Is prayer invalidated if something else is said?
- Does lifting the foot from the ground while in prostration invalidate prayer? Is it necessary to keep the big toe of the right foot on the ground during prostration only or throughout the prayer?
- How long should the chapters to be read in congregational prayers be? Is it permissible to read long chapters?
- What is the length of sajdah (prostration) in prayer? They say it is necessary to remain in prostration long enough to say, "Lailahaillallah"; I sometimes think I do not remain long enough.
- How is tasbih prayer performed?

