Sunan Ibn Majah 2223
سنن ابن ماجه#2223HasanIt was narrated that Ibn 'Abbas said:"When the Prophet (ﷺ) came to Al-Madinah, they were the worst people in weights and measures. Then Allah, Glorious is He revealed: "Woe to the Mutaffifun (those who give less in measure and weight)",[1] and they were fair in weights and measures after that
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan
Muhammad Fouad Abd al-BaqiHasan
Zubair Ali ZaiIsnaad Hasan
In-book reference: 12:87