The Messenger of Allah (ﷺ) said: 'The one who recites the Quran loudly is like one who gives charity openly, and the one who recites the Quran silently is like the one who gives charity in secret.'"
Sunan an-Nasa'i Book 20, Hadith 66
← Previous Hadith "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.'"

Sunan an-Nasa'i Book 20, Hadith 65 Next Hadith → "I prayed with the Prophet (ﷺ) one night. He started to recite Al-Baqarah and I thought, 'he will bow when he reaches one hundred,' but he carried on. I thought, 'he is going to recite the whole surah in one rak'ah,' but he carried on. He started to recite An-Nisa' and recited (the whole surah), then he started to recite Al Imran and recited (the whole surah), reciting slowly. When he reached a verse that spoke of glorifying Allah (SWT), he glorified Him. When he reached a verse that spoke of supplication, he made supplication. When he reached a verse that spoke of seeking refuge with Allah, he sought refuge with Him. Then he bowed and said: 'Subhana Rabbiyal-Azim.(Glory be to my Lord Almighty)', and he bowed for almost as long as he had stood. Then he raised his head and said: 'Sami Allahu liman hamidah (Allah hears those who praise Him)', and he stood for almost as long as he had bowed. Then he prostrated and started to say: Subhana Rabbiyal-'Ala (Glory be to my Lord Most High),' and he prostrated for almost as long as he had bowed.'"

Sunan an-Nasa'i Book 20, Hadith 67