That the Messenger of Allah ﷺ said: "Animals [two for one] are not proper on credit, and there is no harm in a hand to hand (exchange)." The Hadith is Hasan Sahih.
قَالَ رَسُولُ اللَّهِ ﷺ الْحَيَوَانُ اثْنَانِ بِوَاحِدٍ لاَ يَصْلُحُ نَسِيئًا وَلاَ بَأْسَ بِهِ يَدًا بِيَدٍ
[Machine] He said that the Messenger of Allah ﷺ prohibited the sale of an animal for another animal of inferior quality in a ratio of two to one, but there is no harm in conducting a hand to hand transaction.
أَنَّهُ قَالَ نَهَى رَسُولُ اللهِ ﷺ عَنْ بَيْعِ الْحَيَوَانِ بِالْحَيَوَانِ نَسِيئَةً اثْنَيْنِ بِوَاحِدٍ وَلَا بَأْسَ بِهِ يَدًا بِيَدٍ
[Machine] On the authority of the Prophet ﷺ , he said regarding animals, "There is no harm in marrying two animals together, hand in hand, but it is not appropriate for women."
عَنِ النَّبِيِّ ﷺ قَالَ فِي الْحَيَوَانِ اثْنَانِ بِوَاحِدٍ لَابَأْسَ بِهِ يَدًا بِيَدٍ وَلَا يَصْلُحُ نَسَاءً
[Machine] The Messenger of Allah ﷺ said about animals: "There is no harm in two (animals) together, hand in hand, and there is no good in them (i.e. animals) occupied by women."
أَنَّ رَسُولَ اللهِ ﷺ قَالَ فِي الْحَيَوَانِ اثْنَانِ بِوَاحِدٍ لَا بَأْسَ بِهِ يَدًا بِيَدٍ وَلَا خَيْرَ فِيهِ نَسَاءٌ
"الحيوان بالحيوانِ، اثنين بواحد يدًا بيد لا يَصْلُحُ نَسيئةً".