Surah Al-Hajj 22:78

وَجَـٰهِدُوا۟ فِى ٱللَّهِ حَقَّ جِهَادِهِۦ ۚ هُوَ ٱجْتَبَىٰكُمْ وَمَا جَعَلَ عَلَيْكُمْ فِى ٱلدِّينِ مِنْ حَرَجٍ ۚ مِّلَّةَ أَبِيكُمْ إِبْرَٰهِيمَ ۚ هُوَ سَمَّىٰكُمُ ٱلْمُسْلِمِينَ مِن قَبْلُ وَفِى هَـٰذَا لِيَكُونَ ٱلرَّسُولُ شَهِيدًا عَلَيْكُمْ وَتَكُونُوا۟ شُهَدَآءَ عَلَى ٱلنَّاسِ ۚ فَأَقِيمُوا۟ ٱلصَّلَوٰةَ وَءَاتُوا۟ ٱلزَّكَوٰةَ وَٱعْتَصِمُوا۟ بِٱللَّهِ هُوَ مَوْلَىٰكُمْ ۖ فَنِعْمَ ٱلْمَوْلَىٰ وَنِعْمَ ٱلنَّصِيرُ

And strive for Allāh with the striving due to Him. He has chosen you and has not placed upon you in the religion any difficulty. [It is] the religion of your father, Abraham. He [i.e., Allāh] named you "Muslims" before [in former scriptures] and in this [revelation] that the Messenger may be a witness over you and you may be witnesses over the people. So establish prayer and give zakāh and hold fast to Allāh. He is your protector; and excellent is the protector, and excellent is the helper.

Translation: Saheeh International

Tafsir

And struggle in the way of God in order to establish His religion a struggle worthy of Him by expending all effort therein haqqa is in the accusative because it is a verbal noun. …

Excerpt from Tafsir al-Jalalayn, commentary on 22:78, via Quran.com. The reader has the full commentary and 9 more tafsirs.