Ibn 'Umar (May Allah be pleased with them) reported:
The Messenger of Allah (ﷺ) said, "Salat in congregation is twenty-seven times more meritorious than a Salat performed individually."[Al- Bukhari and Muslim]. (FR)
App reference (FR): Book 9, Hadith 74 (FR)
Arabic/English book reference (FR): Book 9, Hadith 1064 (FR)