Sahih al-Bukhari Book 34, Hadith 82
Allah's Messenger (ﷺ) said, "O Allah bestow your blessings on their measures, bless their Mudd and Sa."
The Prophet (ﷺ) meant the people of Medina.
The Prophet (ﷺ) said, "The Prophet (ﷺ) Abraham made Mecca a sanctuary, and asked for Allah's blessing in it. I made Medina a sanctuary as Abraham made Mecca a sanctuary and I asked for Allah's Blessing in its measures the Mudd and the Sa as Abraham did for Mecca.
that his father said. "I saw those, who used to buy foodstuff without measuring or weighing in the life time of the Prophet (ﷺ) being punished if they sold it before carrying it to their own houses."