Imam Muslim alone recorded the hadith of Yahya bin Abi Kathir, from Abu Salamah, from Busr bin Sa'id, from Sayyiduna Zayd bin Khalid (may Allah be pleased with him), that the Messenger of Allah (peace and blessings be upon him) said: "Whoever equips a fighter (mujahid) in the way of Allah (prepares him for jihad) has indeed fought as well (that is, he shares in the reward of jihad)."