Qiyam (To Stand)

967. To stand erect while saying Takbiratul Ihram, and to stand before the Ruku’ – which is called Qiyam muttasil ba Ruku’ – is the Rukn of the prayers. But, standing while reciting Surah Al - Hamd and the other Surah and standing after performing the Ruku’, is not Rukn and if a person omits it inadvertently, his prayers are in order.

968. It is obligatory for a person to stand awhile before and after pronouncing Takbir, so as to ensure that he has pronounced the Takbir while standing.