وَإِذَا بَلَغَ الصَّبِيُّ بَعْدَ مَا أَحْرَمَ، أَوْ أُعْتِقَ الْعَبْدُ، فَمَضَيَا عَلَى ذَلِكَ، لَمْ يُجْزِهِمَا عَنْ حَجَّةِ الْإِسْلَامِ
Translation: If a child reaches puberty after entering iḥrām, or an enslaved person is freed, and each simply continues under the existing iḥrām, this does not discharge their obligatory Hajj.
The qualification fa-maḍayā ʿalā dhālika matters: both continue under the same original iḥrām. The original pilgrimage was not initiated as the adult/free person’s obligatory Hajj.
The slavery terminology reflects the historical legal context and is not a present-day pilgrim category.