Surah Al-Mursalat 77:11
وَإِذَا ٱلرُّسُلُ أُقِّتَتْ
And when the messengers' time has come...
Translation: Saheeh International
Tafsir
and when the time is set for the testimony of the messengers read uqqitat or wuqqitat that is to say when they are gathered to an appointed time
Excerpt from Tafsir al-Jalalayn, commentary on 77:11, via Quran.com. The reader has the full commentary and 9 more tafsirs.