In short, God Almighty states that those who are safeguarded from a state of loss first seek to perfect their knowledge, and secondly, they also prevent their actions from being sullied. In fact, such people advance the perfection of their knowledge to a degree where their actions too become sublime. Then, upon attaining perfect insight when their superb knowledge is established through their sublime actions, they are not miserly; they act upon the following words:
وَتَوَا صَوْا بِالْحَقِّ
“They exhort one another to accept truth.”
Then, they invite others to the truth which they have found. This also means that they manifest the light of their actions. If a person who exhorts others does not act accordingly, then their words can have no effect whatsoever. It is a general fact that if a man exhorts others but does not act upon his own words, this leaves a very bad impression. If a fornicator exhorts others to refrain from fornication, when his state of affairs is established, it may be apprehended that the people who listen to his admonitions could well-nigh become atheists. For they will think to themselves that if fornication is truly a dangerous thing and God Almighty punishes those who indulge in this act, then if God actually existed, why would the person who exhorts us against this act not refrain from it himself ? I am aware of a person who was about to become a Muslim due to his interactions with a Muslim cleric. One day, he saw the same cleric drinking alcohol and so his heart became hardened and he held back from converting. In short, the words وَتَوَا صَوْا بِالْحَقِّ (They exhort one another to accept truth) indicate that they advise others through the light of their actions.
(Hazrat Mirza Ghulam Ahmadas, Malfuzat, Vol. 1, pp. 198-199