…concerning the three daily obligatory prayers. The
friends are free to choose any one of these three prayers, but
have to follow the instructions revealed by Baha’u’llah concerning
them. The long prayer should be recited once in every
24 hours, and is accompanied by certain physical acts. The
short prayer, consisting of one verse, should be recited once a
day at noon; while the medium prayer should be said three
times a day: in the morning, at noon and in the evening. The
believer is entirely free to choose any one of these three prayers
for daily use.
67