17. Ali ibn Ibrahim has narrated from his father from Ibn Abi ‘Umayr from ‘Umar ibn ‘Udhaynah from Bukayr and others who has said the following: “Abu Ja‘far عليه السلام, has said, ‘Every divorce without waiting period is not a valid divorce, or divorce during her experiencing Hayd (menses), Nifas (childbirth), after going to bed with her before her Hayd (menses), such divorces are not valid. If one divorces with waiting period more than once the extra one does not have any valid effect. If one divorces with waiting period without just witnesses, it also is not a divorce and women’s witnessing is not sufficient.’”