A young boy who is at the threshold of puberty comes to you. I, however, do not like that he should come to me, whereupon 'A'isha (Allah be pleased with her) said: Don't you see in Messenger of Allah ﷺ a model for you? She also said: The wife of Abu Hudhaifa said: Messenger of Allah, Salim comes to me and now he is a (grown-up) person, and there is something that (rankles) in the mind of Abu Hudhaifa about him, whereupon Messenger of Allah ﷺ said: Suckle him (so that he may become your foster-child), and thus he may be able to come to you (freely). (Using translation from Muslim 1453d)  

أُمُّ سَلَمَةَ لِعَائِشَةَ إِنَّهُ يَدْخُلُ عَلَيْكِ الْغُلَامُ الْأَيْفَعُ الَّذِي مَا أُحِبُّ أَنْ يَدْخُلَ عَلَيَّ فَقَالَتْ عَائِشَةُ أَمَا لَكِ فِي رَسُولِ اللهِ ﷺ أُسْوَةٌ حَسَنَةٌ؟ قَالَتْ إِنَّ امْرَأَةَ أَبِي حُذَيْفَةَ قَالَتْ يَا رَسُولَ اللهِ إِنَّ سَالِمًا يَدْخُلُ عَلَيَّ وَهُوَ رَجُلٌ وَفِي نَفْسِ أَبِيحُذَيْفَةَ مِنْهُ شَيْءٌ فَقَالَ رَسُولُ اللهِ ﷺ أَرْضِعِيهِ حَتَّى يَدْخُلَ عَلَيْكِ