Arabic (Original)
وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ حدَّثَنِي عَبْدُ اللهِ بْنُ سَعْدٍ الْحَافِظُ ثنا أَحْمَدُ بْنُ إِبْرَاهِيمَ بْنِ عَبْدِ اللهِ ثنا الْحُسَيْنُ بْنُ مَنْصُورٍ ثنا الْحُسَيْنُ بْنُ الْوَلِيدِ قَالَ قَدِمَ عَلَيْنَا أَبُو يُوسُفَ مِنَ الْحَجِّ فَأَتَيْنَاهُ فَقَالَ إِنِّي أُرِيدُ أَنْ أَفْتَحَ عَلَيْكُمْ بَابًا مِنَ الْعِلْمِ هَمَّنِي تَفَحَّصْتُ عَنْهُ فَقَدِمْتُ الْمَدِينَةَ فَسَأَلْتُ عَنِ الصَّاعِ فَقَالُوا صَاعُنَا هَذَا صَاعُ رَسُولِ اللهِ ﷺ قُلْتُ لَهُمْ مَا حُجَّتُكُمْ فِي ذَلِكَ؟ فَقَالُوا نَأْتِيكَ بِالْحُجَّةِ غَدًا فَلَمَّا أَصْبَحْتُ أَتَانِي نَحْوٌ مِنْ خَمْسِينَ شَيْخًا مِنْ أَبْنَاءِ الْمُهَاجِرِينَ وَالْأَنْصَارِ مَعَ كُلِّ رَجُلٍ مِنْهُمُ الصَّاعُ تَحْتَ رِدَائِهِ كُلُّ رَجُلٍ مِنْهُمْ يُخْبِرُ عَنْ أَبِيهِ أَوْ أَهْلِ بَيْتِهِ أَنَّ هَذَا صَاعُ رَسُولِ اللهِ ﷺ فَنَظَرْتُ فَإِذَا هِيَ سَوَاءٌ قَالَ فَعَايَرْتُهُ فَإِذَا هُوَ خَمْسَةُ أَرْطَالٍ وَثُلُثٌ بِنُقْصَانٍ مَعَهُ يَسِيرٍ فَرَأَيْتُ أَمْرًا قَوِيًّا فَقَدْ تَرَكْتُ قَوْلَ أَبِي حَنِيفَةَ فِي الصَّاعِ وَأَخَذْتُ بِقَوْلِ أَهْلِ الْمَدِينَةِ قَالَ الْحُسَيْنُ فَحَجَجْتُ مِنْ عَامِي ذَلِكَ فَلَقِيتُ مَالِكَ بْنَ أَنَسٍ فَسَأَلْتُهُ عَنِ الصَّاعِ فَقَالَ صَاعُنَا هَذَا صَاعُ رَسُولِ اللهِ ﷺ فَقُلْتُ كَمْ رِطْلًا هُوَ؟ قَالَ إِنَّ الْمِكْيَالَ لَا يُرْطَلُ هُوَ هَذَا قَالَ الْحُسَيْنُ فَلَقِيتُ عَبْدَ اللهِ بْنَ زَيْدِ بْنِ أَسْلَمَ فَقَالَ حَدَّثَنِي أَبِي عَنْ جَدِّي أَنَّ هَذَا صَاعُ عُمَرَ ؓ
English Translation
And Abu Abdullah al-Hafiz informed us... from al-Husayn ibn al-Walid who said: Abu Yusuf came to us from Hajj and we went to him. He said: 'I wish to open for you a door of knowledge that concerned me. I investigated it and went to Madinah and asked about the sa'. They said: This sa' of ours is the sa' of the Messenger of Allah (peace be upon him). I asked them for their proof. They said: We will bring you proof tomorrow. The next morning about fifty elders from the children of the Muhajirin and Ansar came, each carrying a sa' under his cloak. Each one told me from his father or household that this was the sa' of the Messenger of Allah (peace be upon him). I examined them and they were all the same. I calibrated them and found them to be five and a third ratls, with a slight deficiency. I saw this as strong evidence and abandoned the view of Abu Hanifah regarding the sa' and adopted the view of the people of Madinah.' Al-Husayn said: I performed Hajj that year and met Malik ibn Anas. I asked him about the sa'. He said: 'This sa' of ours is the sa' of the Messenger of Allah (peace be upon him).' I said: 'How many ratls is it?' He said: 'A measure is not weighed in ratls - it is this.' Then I met Abdullah ibn Zayd ibn Aslam who said: 'My father told me from my grandfather that this was the sa' of Umar (may Allah be pleased with him).'