The importance of the prayers lies in the fact that no matter what actions one performs in his life, the most important aspect is one’s relationship to Allah, that is, one’s faith (imaan), God-consciousness (taqwa), sincerity (ikhlaas) and worship of Allah (‘ibaadah). This relationship with Allah is both demonstrated and put into practice, as well as improved and increased, by the prayer. Therefore, if the prayers are sound and proper, the rest of the deeds will be sound and proper; and if the prayers are not sound and proper, then the rest of the deeds will not be sound and proper, as the Prophet (peace be upon him) himself stated.
In Arabic salaat is the word used for prayer.
The prayer was made obligatory upon all the prophets and for all peoples. Establishing of the prayer means that one performs and executes the prayer in the proper manner as prescribed in the Quran and Sunnah.
Allah says in Quran,
Allah also says in Quran,