Worship is dependent upon revelation. This means that there is no room for personal views in it. Rather, the only one who has the right to legislate what is and isn’t worship is Allah, as He said quoting His Prophet: “I only follow what has been revealed to me.” [Surah Al-Ahqaaf: 9]
Worship must be done sincerely for Allah’s sake and it must be free from any traces of Shirk (polytheism), as Allah, the Most High, says: “So whoever hopes to meet his Lord then let him perform righteous deeds and not mix any partners into the worship of his Lord.” [ Al-Kahf: 110]
The person we follow with regard to worship and the one who clarifies it to us is none other than the Messenger of Allah (s.a.w), as Allah says: “You indeed have in the Messenger of Allah a good example.” [Surah Al-Ahzaab: 21]
Worship is confined to specific time-frames and limitations, which one is not permitted to challenge or transgress, like the prayer for example. Allah says: “Verily, the prayer is enjoined upon the believers at fixed times.” (An-Nisaa: 1)
Worship must be founded upon love for Allah, as well as submission to Him and fear and hope in Him. Allah says: “Those who they call upon (in worship), they seek a way to their Lord, as to which of them is nearest to Him. And they hope for His Mercy and fear His Punishment.” [Surah Al-Israa: 57]
The obligation of performing worship does not get removed from a sane-minded individual that is responsible for his actions from the time he attains puberty to the time he dies. And He says: “And worship your Lord until certainty (i.e. death) reaches you.” [Surah Al-Hijr: 99]
Oneness of the Worship of Allah. To believe that none has the right to be worshipped but Allah.