Yahya related to me from Malik that Yahya ibn Said heard Said ibn al-Musayyab say, "There is no harm in placing stakes on horses if a third horse enters it. The winner takes the stake, and there is no fine against the loser."
Muwatta Malik Book 21, Hadith 48
← Previous Hadith Yahya related to me from Malik from Nafi from Abdullah ibn Umar that the Messenger of Allah, may Allah bless him and grant him peace, held a race between horses which had been made lean by training, from al-Hafya to Thaniyatu-lWada. He held a race between horses which had not been made lean from the Thaniya (a mountain pass near Madina) to the mosque of the Banu Zurayq. Abdullah ibn Umar was among those who raced them .

Muwatta Malik Book 21, Hadith 47 Next Hadith → Yahya related to me from Malik from Yahya ibn Said that the Messenger of Allah, may Allah bless him and grant him peace, was seen wiping the face of his horse with his cloak. He was questioned about it and said, "I was reproached in the night about horses." i.e. not taking care of them.

Muwatta Malik Book 21, Hadith 49