Holding Fast to the Qur'an and Sunnah
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، عَنْ مَالِكٍ، عَنْ إِسْحَاقَ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي طَلْحَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " اللَّهُمَّ بَارِكْ لَهُمْ فِي مِكْيَالِهِمْ، وَبَارِكْ لَهُمْ فِي صَاعِهِمْ وَمُدِّهِمْ " يَعْنِي أَهْلَ الْمَدِينَةِ.Narrated Anas bin Malik:Allah's Messenger (ﷺ) said, "O Allah! Bestow Your Blessings on their measures, and bestow Your Blessings on their Sa' and Mudd." He meant those of the people of Medina
From Sahih al-Bukhari, whose reports the scholars accept as authentic.