The second part of the Religion of God, which refers to the
material world, and which comprises fasting, prayer, forms of worship, marriage
and divorce, the abolition of slavery, legal processes, transactions,
indemnities for murder, violence, theft and injuries—this part of the Law of
God, which refers to material things, is modified and altered in each prophetic
cycle in accordance with the necessities of the times.
(‘Abdu’l-Baha, table
talks in Akka, authenticated by ‘Abdu’l-Baha; ‘Some Answered Questions’)