In this Book He, moreover, prescribes the obligatory prayers; designates the time and period of fasting; prohibits congregational prayer except for the dead; fixes the Qiblih; institutes the Ḥuqúqu’lláh (Right of God); formulates the law of inheritance; ordains the institution of the Mas̱ẖriqu’l-Aḏẖkár; establishes the Nineteen Day Feast, the Bahá’í festivals and the Intercalary Days; abolishes the institution of priesthood; prohibits slavery, asceticism, mendicancy, monasticism, penance, the use of pulpits and the kissing of hands; prescribes monogamy; condemns cruelty to animals, idleness and sloth, backbiting and calumny; censures divorce; interdicts gambling, the use of opium, wine and other intoxicating drinks; specifies the punishments for murder, arson, adultery and theft; stresses the importance of marriage and lays down its essential conditions; imposes the obligation of engaging in some trade or profession, exalting such occupation to the rank of worship; emphasizes the necessity of providing the means for the education of children; and lays upon every person the duty of writing a testament and of strict obedience to one’s government. Apart from these provisions Bahá’u’lláh exhorts His followers to consort, with amity and concord and without discrimination, with the adherents of all religions; warns them to guard against fanaticism, sedition, pride, dispute and contention; inculcates upon them immaculate cleanliness, strict truthfulness, spotless chastity, trustworthiness, hospitality, fidelity, courtesy, forbearance, justice and fairness; counsels them to be "even as the fingers of one hand and the limbs of one body"; calls upon them to arise and serve His Cause; and assures them of His undoubted aid. He, furthermore, dwells upon the instability of human affairs; declares that true liberty consists in man’s submission to His commandments; cautions them not to be indulgent in carrying out His statutes; prescribes the twin inseparable duties of recognizing the "Dayspring of God’s Revelation" and of observing all the ordinances revealed by Him, neither of which, He affirms, is acceptable without the other.