Hazrat Uqbah bin Amir, Allah be pleased with him, narrates that the Holy Prophet, peace and blessings of Allah be upon him, said:
“The one who recites the Quran aloud is like one who gives charity openly, and the one who recites the Quran quietly is like one who gives charity in secret.”
(Sunan al-Nasai, Kitab al-Zakah)