give me reference that Aisha attained puberty at the age of 9, there is no evidence confirming this . She Was prepubescent?

Assalamualaikum Can you provide a Sahih hadith that clearly states Aisha (RA) attained puberty at 9 before her marriage was consummated? There is no direct evidence confirming this. No authentic hadith states Aisha (RA) said, "I attained puberty before consummation." If a non-Muslim asks for proof she was mature at 9, what authentic references should I provide Jazakum Allahu Khairan.