Surah Al-Balad 90:13
فَكُّ رَقَبَةٍ
It is the freeing of a slave
Translation: Saheeh International
Tafsir
the freeing of a slave from bondage
Excerpt from Tafsir al-Jalalayn, commentary on 90:13, via Quran.com. The reader has the full commentary and 9 more tafsirs.