Surah Al-Ma'arij 70:33

وَٱلَّذِينَ هُم بِشَهَـٰدَٰتِهِمْ قَآئِمُونَ

And those who are in their testimonies upright

Translation: Saheeh International

Tafsir

and who are forthwith with their testimony bi-shahādatihim a variant reading has the plural bi-shahādātihim ‘their testimonies’ those who offer them and do not withhold them

Excerpt from Tafsir al-Jalalayn, commentary on 70:33, via Quran.com. The reader has the full commentary and 9 more tafsirs.