Most necessary to thy well-being is contentment (al-qana'at) under all circumstances for through it will the soul be saved from sloth and ill-being.

Bahá’u’lláh, Tablet of Medicine

The source of all glory is acceptance of whatsoever the Lord hath bestowed, and contentment with that which God hath ordained.

Bahá’u’lláh, Tablets of Bahá’u’lláh, p. 155

Whatsoever instilleth assurance into the hearts of men, whatsoever exalteth their station or promoteth their contentment, is acceptable in the sight of God.

Bahá’u’lláh, Gleanings from the Writings of Bahá’u’lláh, p. 205

Therefore the people of Bahá must not fall prey to the corruption of the ruthless, but rather cling to contentment and moderation.

The Universal House of Justice, Messages 1963 to 1986, p. 437