[Following the sunnah and refraining from innovation :] Know, O creatures of Allāh, that a believer should regard lawful this year what he regarded lawful in the previous year, and should consider unlawful this year what he considered unlawful in the previous year. Certainly people’s innovation cannot make lawful for you what has been declared unlawful; rather, lawful is that which Allāh has made lawful and unlawful is that which Allāh has made unlawful. You have already tested the matters and tried them; you have been preached by those before you. Illustrations have been drawn for you and you have been called to clear fact. Only a deaf man can remain deaf to all this, and only a blind man can remain blind to all this.