In the Holy Qur'an

Indeed, those who are near your Lord are not prevented by arrogance from His worship, and they exalt Him, and to Him they prostrate. (7:206)

In the Traditions

The Prophet said to some of his companions, "Why is it that I do not see sweetness in your worship?" When they asked him what sweetness of worship was, he replied, 'Humility'.

The Prophet said, "Good fortune is theirs who are humble - but not through poverty, who spend of their wealth which they have gained lawfully, who have mercy on the abased and poor and who keep company with the scholars of law and the wise."