Silent Rakahs Reciting Quran
This is Ijtihad of some Fuqaha to not to recited a portion of Quran in the thrid and fourth rakaat of Fard prayer, and it is not an agreed upon practice. What we are taught is of the opinion adopted in Hanafid and Maliki school, while the followers of Shafi’i recite a portion of Quran in all three or four rakaat, hence, there is not Ijama and Tawatur on reciting no Quran in the third and fourth rakaat. One is justified to think that the thrid and fourth rakaat should be the same as the first two.