It should be remembered that in Salãh, one communicates with one's Lord, therefore, one should consider how one offers his/her Salãh. Allah ta'ãlã has commanded us to establish the Salãh. Establishment means to carry out Salãh and all its constituents (including it's pre-requisite wudhoo) very carefully. Although the command will apply to the Salãh in general, however, one should be extremely particular about the following points:

• To accomplish the wudhoo by fulfilling all the acts of sunnah and mustahab (preferable). 
• To recite the specific du'ãs mentioned in the Hadeeth when washing each part of the body. 
• Also, to ensure that the clothes and the water of wudhoo are pãk (free of any impurity). But do not go out of your way regarding this, letting minor doubts bother you, as these are usually created by Shaytãn, who uses tricks like these to waste the precious time of the obedient Servants of Allah ta'ãlã. More...