What is the meaning of tuma\'neenah in ruku? How can I determine that I attained tuma\'neenah, what is the feeling? I see a person attains rest (tuma\'neenah) normally in the last point of releasing his air from mouth when the joints of the body & mind both feel rest. Am I correct? What should be done if one misses rukn like tumaneenah, straightening backbone in ruku, sujud due to following Imam as following Imam is also obligatory. If in every rakah he misses rukn due to this reason what should he do? The missing can be for not getting enough time what he personally needs due to slowness of his brain to attain tuma\'neenah or compact ruku, sujud of Imam. It needs to be mentioned that He tries his best to complete the rukn on time but can\'t complete.Will he pray in congregation as he misses some rukn regularly for following imam? What he will do in Jumuah prayer ? If you say that you need to fulfill that rakat in which you missed some rukn after imam\'s salam then I will say in 4 rakah salah I miss rukn in each rakah (that rukn is tuma\'neenah). In this case will I repeat 4 rakah? Or I am excused for not fulfilling rukn due to my illness or trying my best to fulfill the rukn but can\'t or imam\'s compact timing of ruku?