Silsilat al-Ahadith al-Sahihah

Abu Huraira (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: "Prayer consists of three parts: one third is purification, one third is bowing (ruku'), and one third is prostration (sujood). Whoever performs the prayer as it should be performed, the rest of his deeds will also be accepted, and whoever's prayer is rejected, the rest of his deeds will also be rendered void."