that he asked Sahl, "Did you use white flour during the lifetime of the Prophet ﷺ ?" Sahl replied, "No. Hazim asked, "Did you use to sift barley flour?" He said, "No, but we used to blow off the husk (of the barley).
أَنَّهُ سَأَلَ سَهْلاً هَلْ رَأَيْتُمْ فِي زَمَانِ النَّبِيِّ ﷺ النَّقِيَّ قَالَ لاَ فَقُلْتُ فَهَلْ كُنْتُمْ تَنْخُلُونَ الشَّعِيرَ قَالَ لاَ وَلَكِنْ كُنَّا نَنْفُخُهُ
[Machine] I asked Sahel ibn Saad, "Did you see during the time of the Messenger of Allah ﷺ pure barley?" He said, "No." Abu Hazim said, "So I said, 'How do you separate the barley?'" He said, "No, but we used to blow on it."
سَأَلْتُ سَهْلَ بْنَ سَعْدٍ هَلْ رَأَيْتُمْ فِي زَمَانِ رَسُولِ اللهِ ﷺ نِقْيَ الْبُرِّ؟ قَالَ «لَا» قَالَ أَبُو حَازِمٍ فَقُلْتُ كَيْفَ كُنْتُمْ تَنْخُلُونَ الشَّعِيرَ؟ قَالَ «لَا وَلَكِنَّا كُنَّا نَنْفُخُهُ»