Musnad Ahmad 544:4

Al-Haytham ibn Kharijah narrated to us, he said: Al-Jarrah ibn Malih al-Bahrani, a Homsi, informed us, from Bakr ibn Zur'ah al-Khawlani, he said: I heard Abu 'Anabah al-Khawlani saying: I heard the Prophet, peace and blessings of Allah be upon him, saying: "Allah, the Almighty and Majestic, will continue to plant in this religion a planting, [and] He will employ them in His obedience."