Surah 73. Al-Muzzammil, Ayah 7

A prophet of Allah, as a man, a member of a family, or a citizen, has many ordinary duties to perform; and his work may be made difficult and irksome in protecting those who listen to his preaching and are therefore molested and persecuted by the world. But while discharging all his ordinary duties, he should work as in the presence of Allah, and in all matters and at all times retain the sense of Allah's nearness. His work may be on earth, but his heart is in Heaven.