Allah Taala states in the Holy Quran:
Undoubtedly, he attained to his goal who purified. [Al-Ala: 14]
The body and the soul together make up a complete person. While the body belongs to this world, the souls origin is the realm of Divine Power. Allah Taala by His Divine Power has united them and made provisions for their growth. Just as Allah Taala has provided various foods for the nourishment of the body, he has also provided sustenance for the soul. This vital sustenance, which invigorates the soul, is the Remembrance of Allah.