During the devotional part of the Nineteen Day Feast any
part of the writings of the Báb, Bahá'u'lláh and the Master can be read, also
from the Bible and Qur'an, as these are all sacred scriptures. This part of the
meeting need not be confined to prayers, though prayers can and should be read
during it.
- Shoghi Effendi (From a letter written on behalf of Shoghi Effendi, 18 October 1948
to an individual believer; The Compilation of Compilations, vol. I, Nineteen
Day Feast)