وَٱلَّذِينَ يَصِلُونَ مَآ أَمَرَ ٱللَّهُ بِهِۦٓ أَن يُوصَلَ وَيَخۡشَوۡنَ رَبَّهُمۡ وَيَخَافُونَ سُوٓءَ ٱلۡحِسَابِ ٢١
And those who join that which Allāh has ordered to be joined1 and fear their Lord and are afraid of the evil of [their] account,
Translation: Saheeh International (English)
1 i.e., they uphold the ties of relationship.
Each word's meaning and sound
They are those who join everything that Allah commands to be joined, such as ties with family and their fellow brothers for the sake of Allah, who are in such awe of their Lord that it moves them to carry out His instructions and refrain from His prohibitions, and who fear that Allah will take them to account for every sin they commit, for any person whose account is scrutinised will be ruined.
Al-Mukhtasar in interpreting the Noble Quran