Is it correct to teach 'aqidah, or is it sufficient to explain Islam only?

Question:
Honorable Shaykh, a questioner says: What is your view of the statement of one who says that we should not discuss the details of 'aqidah and point out religious innovations (bid'ah), but rather we should clarify that the global issue of Islam is more important than these branches? May Allah reward you with good.

Answer:
Islam is built upon 'aqidah; there is no Islam without 'aqidah. 'Aqidah is the foundation of Islam. This is why the two testimonies of faith come first among the pillars of Islam. The Prophet (peace and blessings be upon him) commanded calling to the two testimonies before calling to prayer, to zakah, to fasting, and to the pillars of Islam. So there is no Islam without 'aqidah.
Therefore, it is necessary to pay attention to the matter of 'aqidah and correct it. The messengers (peace and blessings be upon them) begin first with 'aqidah because it is the foundation. The one who belittles the matter of 'aqidah and diminishes its status, saying that Islam is sufficient, is saying that there is Islam without 'aqidah. How can it be sufficient? There is no Islam without 'aqidah, and Islam is not valid without 'aqidah. It is like building a body without a head; this is absolutely impossible.
This person is either ignorant, hearing the words of people and repeating them without understanding, or he is malicious and fighting 'aqidah. He comes with this approach, saying that the name Islam is sufficient without 'aqidah. This is a clear fallacy.