‘Abdu’l-Baha is the exemplar of the spirit of the Prophet

The Master reflects the qualities of the Manifestations as if He were a mirror. He reflects not only those of Bahá'u'lláh but also of Christ as He is the exemplar of the spirit of the Prophet.... (From a letter written on behalf of Shoghi Effendi, The Unfolding Destiny of the British Baha'i Community, p. 440)