The Essence of Islam – Volume II — Page 318
318. Essence of Islam II. Allāh is pronounced upon it, or a pig is slaughtered in the same way, would the eating of the flesh of the dog or the pig become lawful? That which is unlawful will remain unlawful in all circumstances. The root of the word Zakāt means purification. When a person who acquires something lawfully and out of it spends in the cause of the faith, the rest of it is purified. Many people are involved in these errors and they do not recognize the reality. All this must be discarded. . All the ordinances of Islam are means of salvation, but through their errors people go astray. One should not take pride in one's good actions, nor be pleased with them until such sincere faith is achieved that no one is associated in one's worship of God Almighty and one is enabled to worship righteousness all the time. [Speeches to Jalsah Salāna, 1906, pp. 20-21]