Sheikh Muhammad Al-'Ansi ḥafidhahullāh responded:

وعليكم السلام ورحمة الله وبركاته If your son has a passion for seeking Islamic knowledge, specifically the knowledge of the Book of Allah and the Sunnah of His Messenger ﷺ, then we advise you for the sake of Allah to rejoice in this and to praise Allah for having blessed you with a child who upholds the religion of Allah, supports the Sunnah, and spreads knowledge. If he is a student of knowledge adhering to the Salafi methodology, loving goodness and righteousness, then by Allah’s grace, he will play a significant role in this noble endeavor—knowledge, Sunnah, goodness, and leadership in religion. These are ranks only attained by men chosen by Allah. The world is full of people who seek worldly pursuits; work, travelling abroad for this purpose and earning money; they are countless. But who will carry the banner of Islam? Who will spread knowledge? Who will propagate the Sunnah? Who will be an imām for the people; who Allah will raise in mention, and become a source of pride for his parents, as the Prophet ﷺ said: "When a person dies, his deeds come to an end except for three: ongoing charity, beneficial knowledge, or a RIGHTEOUS CHILD WHO PRAYS FOR HIM." Our concern should not be merely worldly matters, such as questioning why our son isn’t working, or why he is doing this or that, or why does he love the religious ones? What kind of talk is this?! We are Muslims. Allah has honored us with Islam, the Qur’an, and the Sunnah. We should be proud of this and hold our heads high. [Allah said (interpreted meaning) "Say, 'In the bounty of Allah and in His mercy—in that let them rejoice; it is better than what they accumulate.' By Allah, having one Salafi student of knowledge in a country, who is dedicated to goodness and righteousness, spreading knowledge, enjoining good, forbidding evil, and teaching people the religion of Allah, is better than hundreds of thousands of officers, officials, princes, directors, ministers, presidents, or doctors. That is because this knowledge is the inheritance of the Prophets. "The Prophets did not leave behind dinars or dirhams, but they left behind knowledge. Whoever takes it, takes an abundant share." [ḥadīth] Therefore, do not stand in the way of your son and the goodness he seeks. However, I must point out a few matters, may Allah bless you. Firstly, if your son is merely spending his time in prayer and fasting and neglecting important duties while you need his help in your work, this is incorrect. Allah did not command us to abandon important duties to focus solely on fasting and prayer while neglecting many other rights: the rights of parents, relatives, neighbours, and oneself. This is not proper understanding of the religion if he is just fasting and praying without seeking knowledge or diligently striving in pursuit of it, and instead remains lazy and wastes his time. This is not appropriate. Or if he is associating with partisan groups, such as the Ikhwanul Muslimoom, Charity organisations, Surooris, Qutbis, followers of Abul Hasan, or the new hizb of Al-Adani and those like them, or any deviant groups like the Tablighi Jamaat or others, this is also not permissible. He must either adhere to the Shari'ah of Allah, goodness, and the Sunnah, or remain on a natural and upright path and engage in suitable and relevant work. So, pay attention to this and do not confuse matters, meaning "a religious person"—what exactly do you mean by that? In any case, our advice to you is to encourage him, support him, and be happy for him. If he seeks to pursue knowledge, provide him with all you can, FOR HE WILL BE AN ASSET FOR YOU AND FOR ISLAM AND THE MUSLIMS. This is a concise piece of advice. I ask Allah to grant us and you success and to rectify our and your offspring. Source: https://t.me/BOT_9_9_1/20328 _ I advise your son with the saying of Allah: {ولا تنس نصيبك من الدنيا} "And do not forget your share of the Dunya." @madrasatuna