Another chain with similar meaning.
There are narrations on this topic from Mujammi' bin Jariyah, Ibn 'Abbas, and Ibn Abi 'Amrah from his father. This Hadith of Ibn 'Umar is a Hasan Sahih Hadith. This is acted upon according to most of the people of knowledge among the Companions of the Prophet ﷺ and others.
This is the view of Sufyan At-Thawri, Al-Awzai', Malik bin Anas, Ibn Al-Mubarak, Ash-Shafi'i, Ahmad and Ishaq. They said that the horsemen gets three shares, one share is for him and two shares for his horse. The foot soldiers get one share.
• Jami` at-Tirmidhi, Vol. 3, Book of Military Expeditions, Hadith 1554b
• Jami` at-Tirmidhi, Book of Military Expeditions, Hadith 1554b