Is it permissible to pray the Duha prayer in congregation, and is it to be recited quietly or aloud?

Question : Is it permissible to pray the Duha prayer in congregation, and is it to be recited quietly or aloud?

Answer : We say that making the congregation a regular habit for the Duha prayer is a religious innovation (bid'ah), but if one does it occasionally, there is nothing wrong with it. The Messenger (peace and blessings be upon him) used to pray the night prayer in congregation on some occasions. Once, Ibn Abbas prayed with him, and once, Ibn Mas'ud prayed with him, and once, Hudhayfah ibn al-Yaman prayed with him. Ibn Mas'ud prayed with the Prophet (peace and blessings be upon him) one day and became tired from the length of standing. Ibn Mas'ud said, without the Messenger (peace and blessings be upon him) being present, that he stood until his feet swelled. May Allah send prayers and blessings upon him. He said, "Until I feared a bad outcome."
When the standing became difficult for Ibn Mas'ud, he said, "I was on the verge of a bad decision." He was asked, "What were you on the verge of, O Abu 'Abd al-Rahman?" He said, "I was on the verge of sitting down and leaving." Likewise, on that day, he prayed with him and he recited al-Baqarah, then al-Nisa, then al-Hamra.