Quran Chapter 90 (Surat Al-Balad)
As per Ghamidi Sahab, this has to do with special status of Shahdah given to progeny of Abraham (SWS) . The whole Surah should be seen holistically starting from verse one. The same topic has been discussed in Surah At-Tin as well. Following thread will be helpful in understanding the context properly: Discussion 66720