مختصر صحيح مسلم
Mukhtasar Sahih Muslim
Horse racing and training horses.
It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) held a race between the trained horses from Hafya to Thaniyyatul Wada‘ (the distance between these two places is five or six miles, and some have said six or seven miles), and set the race for untrained horses from Thaniyya to the mosque of Banu Zuraiq. Sayyiduna Ibn Umar (may Allah be pleased with them both) was among those who competed in horse riding.
Those excused from jihad and Allah’s saying:“Not equal are those who sit...”
Abu Ishaq says that he heard from Sayyiduna Bara’ (may Allah be pleased with him) regarding this verse:“Those Muslims who sit (at home) and those who fight (in Allah’s cause) are not equal (i.e., the rank of those who fight is much greater),”that the Messenger of Allah (peace and blessings be upon him) instructed Sayyiduna Zaid to bring a bone, and he wrote this verse on it. Then Sayyiduna Abdullah bin Umm Maktum complained about his blindness (i.e., I am blind, so I cannot go for jihad; will my rank be less because of this?). At that time, these words were revealed:“those who are not disabled”(and the disabled will be equal in rank to the mujahideen).
One prevented from jihad by illness.
Sayyiduna Jabir (may Allah be pleased with him) says: We were with the Prophet (peace and blessings of Allah be upon him) in a battle when he said: "There are some people in Madinah who, whenever you walk or cross any valley, they are with you (that is, they receive the same reward as you do). (These are the people) who could not come with you due to illness."