How can the error of the preacher be clarified, who stated that Lady Aisha was not young when she married the Messenger of Allah, peace and blessings be upon him, and that determining her age as nine years is inaccurate due to the absence of an accurate calendar at that time, justifying this by Abu Bakr saying "my two daughters" and not "my two small children"? And what are the proofs and evidences if his words are true?

What the speaker mentioned are mere delusions and specious arguments that cannot stand against the sound, explicit, and well-established narration in Sahih (definition) Muslim and others, from Aisha, may Allah be pleased with her, who said: "The Messenger of Allah, peace and blessings be upon him, married me when I was six years old, and he consummated the marriage with me when I was nine years old." There is no harm in that as long as she had matured and reached the age of women, and the age of puberty varies among people and environments.