Musannaf Ibn Abi Shayba 23:204

Abu Usama narrated to us, from Hisham, from Muhammad, from Abu Hurayrah, who said: "I love the shackle (al-qayd) in a dream, and I dislike the iron collar (al-ghull). The shackle is steadfastness in the religion." And Abu Hurayrah said: "Milk in a dream is the natural disposition (al-fitrah)."