Shaykh Zayd al-Madkhalee (may Allah have mercy on him) said:
It is upon the people of knowledge of this Ummah – the inheritors of the generous Prophets, the great Messengers, the beauty and stars of the earth – it is upon them to prepare themselves to spread the guidance of Allah; that which Allah guides whom He wills from amongst His servants all over the world, North to South, East to West! It is upon them not to hesitate in exerting all means that can be used to propagate and spread the religion. They should be vigorous in benefiting the people with good so that groups and individuals can live good, blessed lives.
(By way of this knowledge and propagation) the disbeliever will enter into Islam, the headless person will awaken, the ignorant person will learn, the confused person will gain insight, and the open sinner will become shy from Allah! How many people are affected by these calamities these days, and how few are the doctors who have the ability to treat their wounds, and cure their illnesses of desires and doubts, while seeking the face of Allah and His Jannah!
Al-Kenz al-Thameen pg. 15-16 by Shaykh Zayd bin Muhammad al-Madkhalee – Translation by: Mustafa George DeBerry