Sunan an Nasai
1662
Sahih+2

It was narrated that Abdullah bin Abi Qais said:"I asked Aishah: "How did the Messenger of Allah (ﷺ) recite at night- did he recite loudly or silently?" She said: 'He used to do both; sometimes he recited loudly and sometimes he recited silently

SahihAbu Ghuddah
SahihAl-Albani