ENOfficial
He said that God’s Messenger forbade a stallion's covering. Bukhari transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْهُ قَالَ: نَهَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَنْ عَسْبِ الْفَحْلِ. رَوَاهُ الْبُخَارِيُّ
sunnah.com