Abdullah bin Abi Qais narrated:"I asked Aishah how the recitation of the Prophet (S) was at night. [Would he recite silently o audibly?] So she said: 'He would do both of those. Sometimes he was silent with his recitation and sometimes it was audible.' So I said: 'All praise is due to Allah, the One who made the matter broad

English translation · Jami' at-Tirmidhi