We went out with the Messenger of Allah ﷺ and when we were in the Harrah, at as-Suqya (a halting place between Makkah and Madinah) which belonged to Saʿd bin Abi Waqqas, the Messenger of Allah ﷺ said: ʿBring me some water for wudoo’.” When he had done wudoo he stood up and turned to face the qiblah, then he said takbeer, then he said: O Allah, Ibrahim was Your slave and Your close friend; he prayed for blessing for the people of Makkah. I am Muhammad, Your slave and Your Messenger; I am praying to You for the people of Madinah - bless their mudd and saʿ [weights and measures] as You blessed the people of Makkah, double the blessing You bestowed upon the people of Makkah, a twofold blessing.” (Using translation from Aḥmad 936)
خَرَجْنَا مَعَ رَسُولِ اللهِ ﷺ حَتَّى إِذَا كُنَّا بِالْحَرَّةِ بِالسُّقْيَا الَّتِي كَانَتْ لِسَعْدِ بْنِ أَبِي وَقَّاصٍ فَقَالَ رَسُولُ اللهِ ﷺ «ائْتُونِي بِوَضُوءٍ فَتَوَضَّأَ ثُمَّ قَامَ فَاسْتَقْبَلَ الْقِبْلَةَ» ثُمَّ قَالَ «اللهُمَّ إِنَّ إِبْرَاهِيمَ كَانَ عَبْدَكَ وَخَلِيلَكَ دَعَا لِأَهْلِ مَكَّةَ بِالْبَرَكَةِ وَأنا مُحَمَّدٌ عَبْدُكَ وَرَسُولُكَ أَدْعُوكَ لِأَهْلِ الْمَدِينَةِ أَنْ تَبَارَكَ لَهُمْ فِي مُدِّهِمْ وَصَاعِهِمْ مِثْلَيْ مَا بَارَكْتَ لِأَهْلِ مَكَّةَ مَعَ الْبَرَكَةِ بَرَكَتَيْنِ» أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ عَنْ مَالِكِ بْنِ أَنَسٍ عَنْ إِسْحَاقَ بْنِ عَبْدِ اللهِ بْنِ أَبِي طَلْحَةَ عَنْ أَنَسِ بْنِ مَالِكٍ أَنَّ رَسُولَ اللهِ ﷺ قَالَ «اللهُمَّ بَارِكْ لَهُمْ فِي مِكْيَالِهِمْ وَبَارِكْ لَهُمْ فِي صَاعِهِمْ وَفِي مُدِّهِمْ» يَعْنِي أَهْلَ الْمَدِينَةِ