سُبْحَانَ ٱللَّٰهِ
Holy Qur'an
Al-Qur'an
Kids Qur'an
Lit., "that is their sum-total [or "goal"] of knowledge".
Men with a materialist tum of mind, whose desires are bounded by sex and material things, will not go beyond those things. Their knowledge will be limited to the narrow circle in which their thoughts move. The spiritual world is beyond their ken. While persons with a spiritual outlook, even though they may fail again and again in attaining their full ideals, are on the right Path. They are willing to receive guidance and Allah's Grace will find them out and help them.