Umm Salamah asked the Messenger of Allah ﷺ permission for getting herself cupped. He commanded Abu Tibah to cup her. The transmitter said: I think he was her foster-brother or a boy not yet of age. (Using translation from Abū Dāʾūd 4105)
أَنَّ أُمَّ سَلَمَةَ اسْتَأْذَنَتْ رَسُول اللهِ ﷺ فِي الْحِجَامَةِ فَأَمَرَ رَسُولُ اللهِ ﷺ أَبَا طَيْبَةَ أَنْ يَحْجُمَهَا قَالَ حَسِبْتُ أَنَّهُ كَانَ أَخَاهَا مِنَ الرَّضَاعَةِ أَوْ غُلَامًا لَمْ يَحْتَلِمْ