Sayyiduna Abu Mas'ud (may Allah be pleased with him) said: A man came to the Prophet (peace and blessings be upon him) with a she-camel fitted with a nose-rein and said: "O Messenger of Allah, this is in the path of Allah." The Messenger of Allah (peace and blessings be upon him) said to him: "In return for it you will have seven hundred she-camels fitted with nose-reins on the Day of Resurrection."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14707