Ady bin Thabit al-Ansari عدي بن ثابت الأنصاري الكوفي · The Book of Marriage

"The rest of the wives of the Prophet refused for anyone to enter upon them on the basis of that type of breast-feeding, meaning breast-feeding of an adult. They said to 'Aishah: 'By Allah, we think that this is a concession which the Messenger of Allah granted only to Salim. No one will enter upon us, nor see us on the basis of this type of breast-feeding.'"

"I was thinking of forbidding Ghilah until I remembered that it is done by the Persians and Romans" -(one of the narrators) Ishaq said: "(They) do that -and it does not harm their children."