Surah Ya-Sin 36:14

إِذْ أَرْسَلْنَآ إِلَيْهِمُ ٱثْنَيْنِ فَكَذَّبُوهُمَا فَعَزَّزْنَا بِثَالِثٍ فَقَالُوٓا۟ إِنَّآ إِلَيْكُم مُّرْسَلُونَ

When We sent to them two but they denied them, so We strengthened [them] with a third, and they said, "Indeed, we are messengers to you."

Translation: Saheeh International

Tafsir

When We sent to them two men and they denied them both from idh arsalnā ilayhim ithnayni fa-kadhdhabūhumā to the end is a substitution for the previous idh ‘when’ so We reinforced them read fa-‘azaznā or fa-‘azzaznā in other words We reinforced the two men with a third and they said ‘We have indeed been sent to you by …

Excerpt from Tafsir al-Jalalayn, commentary on 36:14, via Quran.com. The reader has the full commentary and 9 more tafsirs.