The Bayán hath been superseded by the Kitáb-i-Aqdas, except in respect......
Translated
oceanoflights.org/abdul-baha-tablets-talks-bahai-library-205-en/
[Extract from a Tablet of 'Abdu'l‑Bahá]
The Bayán hath been superseded by the Kitáb-i-Aqdas, except in respect of such laws as have been confirmed and mentioned in the Kitáb-i-Aqdas. The Book to which the Bahá'ís turn is the Kitáb-i-Aqdas, not the Bayán.
---'Abdu'l‑Bahá