By Allah, we do not find this but a sort of concession given by Allah's Messenger (ﷺ) only for Salim, and no one was ging to be allowed to enter (our houses) with this type of fosterage and we do not subscribe to this view.
Sahih Muslim Book 17, Hadith 38
← Previous Hadith I heard Umm Salama, the wife of Allah's Apostle (may peace be upon himy, saying to 'A'isha: By Allah, I do not like to be seen by a young boy who has passed the period of fosterage, whereupon she ('A'isha) said: Why is it so? Sahla daughter of Suhail came to Allah's Messenger (ﷺ) and said: Allah's Messenger, I swear by Allah that I see in the face of Abu Hudhaifa (the signs of disgust) on account of entering of Salim (in the house), whereupon Allah's Messenger (ﷺ) said: Suckle him. She (Sahla bint Suhail) said: He has a heard. But he (again) said: Suckle him, and it would remove what is there (expression of disgust) on the face of Abu Hudhaifa. She said: (I did that) and, by Allah, I did not see (any sign of disgust) on the face of Abu Hudhaifa.

Sahih Muslim Book 17, Hadith 37 Next Hadith → Allah's Messenger (ﷺ) visited me when a man was sitting near me, and he seemed to disapprove of that. And I saw signs of anger on his face and I said: Messenger of Allah, he is my brother by forsterage, whereupon he said: Consider who your brothers are because of fosterage since fosterage is through hunger (i. e. in infancy).

Sahih Muslim Book 17, Hadith 39