Sahih Muslim
650.01

Ibn Umar reported Allah's Messenger (ﷺ) assaying:Prayer said in a congregation is twenty-seven degrees more excellent than prayer said by a single person

650.02

Ibn 'Umar reported Allah's Apostle (ﷺ) as saying:The prayer of a person in congregation is twenty-seven times in excess to the prayer said alone

650.03

Ibn Numair reported it on the authority of his father (a preference of) more than twenty (degrees) and Abu Bakr in his narration (has narrated it) twenty- seven degrees

650.04

Ibn 'Umar reported from the Messenger of Allah (ﷺ) as some and twenty (degrees)