The virtues in namâz
Hadrat Imâm-i Rabbânî writes in the 20th Letter of the Second Volume of his Maktûbât:

“May hamd-u-thanâ be to Allahu ta’âlâ! Salâmat to the good people whom He loves! O My Dear Brother! This world is the place for work. The next world is the place for getting wages. Strive to do pious actions! The most useful of these actions, the most superior worship is to perform namâz. Namâz is the archstone of the dîn [religion]. It is the mi’râj for Believers. Then, one should do one’s best to perform it well. One should observe its precepts, its conditions, its sunnats and adabs in a manner liked and suitable. When performing namâz, one should be careful about its tumânînat [keeping all one’s limbs motionless in rukû (bowing during namâz), in sajda (prostration), in qawma (standing for a while after straightening up from the bowing position), in jalsa (sitting for a while between the two sajdas)] and about the ta’dîl-i-arkân [to remain motionless for a while after becoming calm at these four places]. Many people, paying no attention to these, have been ruining their namâzes. They have been neglecting the tumânînat and the ta’dîl-i-arkân. It was informed that they will be tormented. When namâz is performed correctly, the hope of salvation will increase. For the archstone of the dîn will then have been erected. The plane to fly to endless bliss will have been boarded.”