Surah Al-Qasas 28:87

وَلَا يَصُدُّنَّكَ عَنْ ءَايَـٰتِ ٱللَّهِ بَعْدَ إِذْ أُنزِلَتْ إِلَيْكَ ۖ وَٱدْعُ إِلَىٰ رَبِّكَ ۖ وَلَا تَكُونَنَّ مِنَ ٱلْمُشْرِكِينَ

And never let them avert you from the verses of Allāh after they have been revealed to you. And invite [people] to your Lord. And never be of those who associate others with Allāh.

Translation: Saheeh International

Tafsir

And never let them bar you yasuddunnaka is actually yasuddūnannaka but the nūn of the indicative ending has been omitted because of the apocopating particle lā as has the wāw of the third person plural subject of the verb because of its coming together with an unvocalised nūn from God’s signs after they have been …

Excerpt from Tafsir al-Jalalayn, commentary on 28:87, via Quran.com. The reader has the full commentary and 9 more tafsirs.