What is your advice for someone who has graduated from a Sharia college and wishes to seek knowledge and work in calling people to Allah and teaching the people?

Question:
What is your advice for someone who has graduated from a Sharia college and wishes to seek knowledge and work in calling people to Allah and teaching the people? And what books do you advise him to read?

Answer:
This is a good thing; that after he has learned the Sharia sciences, he wants to benefit people with them, call to Allah, and teach the Muslims. This is the obligatory duty of scholars and students of knowledge: to carry out the call to Allah and teach people what benefits them. This is the obligation of everyone who has knowledge. The books are many, and praise be to Allah. The greatest of them is the Book of Allah and the Sunnah of His Messenger (peace and blessings be upon him). The books of the righteous Salaf in creed, in tafsir, in hadith, in the explanations of hadith, and in all of fiqh are available and accessible, praise be to Allah, and one can benefit from them.