Previously We wrote to thee[Zaynu'l-Muqarrabin] that had the
friends there observed the payment of Huququ'lláh, the people of that region
would have enjoyed ease and comfort. Before this law was revealed there was no
obligation on the part of any soul. The Pen of Glory held back from revealing
laws and ordinances for a number of years, and this was a token of His heavenly
grace. Were the people of the world to recognize what inestimable benefits the
ordinances of the All-Merciful would bring forth, they would arise to fulfil
His commandments and would observe His bidding ... (Baha’u’llah, The
Compilation of Compilation, vol. I, Huqúqu'lláh)