The closest moment of the servants to Allah in this world is the position of prostration during prayer. The peace and tranquility gained by performing prayer cannot be gained by any other worship.
Prayer consists of twelve obligatory acts. Six of them are called conditions of prayer (shurut al-salat) because they are required to be fulfilled before beginning to perform the prayer, which are:
1) Taharah min al-Hadath (Purification from spiritual impurities),
2) Taharah min al-Najasah (Purification from material impurities)
3) Satr al-Awrah (Rules of Modesty),
4) Istiqbal al-Qiblah (Turning towards the direction of Mecca)
5) The Timing for the Prayer
6) Intention
The other six obligatory acts are called essential parts of the ritual prayer (rukn al-salat). These requirements must be fulfilled while performing the prayer. These are:
1) Takbir al-Iftitah (Opening Takbir)
2) Qiyam (Standing)
3) Qira'ah (Recitation of the Qur'an)
4) Ruku (Bowing Down)
5) Sajdah (Prostration)
6) Qadah al-Akhirah (The Final Sitting)