Breeding a mule from a donkey and a horse

[AI] I said, “O Messenger of Allah ﷺ, should I not put a donkey to a horse for you, so that it produces a mule for you to ride?” He said, "Only those who do that are the ones who do not know."

قُلْتُ: يَا رَسُولَ اللهِ، أَلَا أَحْمِلُ لَكَ حِمَارًا عَلَى فَرَسٍ فَتُنْتِجَ لَكَ بَغْلًا فَتَرْكَبُهَا؟ قَالَ: «إِنَّمَا يَفْعَلُ ذَلِكَ الَّذِينَ لَا يَعْلَمُونَ»