The Quran root أ ج ر ’-j-r

إِنَّ الَّذِينَ آمَنُوا وَالَّذِينَ هَادُوا وَالنَّصَارَىٰ وَالصَّابِئِينَ مَنْ آمَنَ بِاللَّهِ وَالْيَوْمِ الْآخِرِ وَعَمِلَ صَالِحًا فَلَهُمْ أَجْرُهُمْ عِندَ رَبِّهِمْ وَلَا خَوْفٌ عَلَيْهِمْ وَلَا هُمْ يَحْزَنُونَ ٦٢

أَجْرُهُمْ ajruhum · their reward

Indeed, those who believed and those who were Jews or Christians or Sabeans [before Prophet Muḥammad (ﷺ)] - those [among them] who believed in Allāh and the Last Day and did righteousness - will have their reward with their Lord, and no fear will there be concerning them, nor will they grieve. (Surah Al-Baqarah, 2:62)

بَلَىٰ مَنْ أَسْلَمَ وَجْهَهُ لِلَّهِ وَهُوَ مُحْسِنٌ فَلَهُ أَجْرُهُ عِندَ رَبِّهِ وَلَا خَوْفٌ عَلَيْهِمْ وَلَا هُمْ يَحْزَنُونَ ١١٢

أَجْرُهُ ajruhu · (is) his reward

Yes, [on the contrary], whoever submits his face [i.e., self] in Islām to Allāh while being a doer of good will have his reward with his Lord. And no fear will there be concerning them, nor will they grieve. (Surah Al-Baqarah, 2:112)

قَالَتْ إِحْدَاهُمَا يَا أَبَتِ اسْتَأْجِرْهُ إِنَّ خَيْرَ مَنِ اسْتَأْجَرْتَ الْقَوِيُّ الْأَمِينُ ٢٦

اسْتَأْجِرْهُ is'tajir'hu · Hire him

One of the women said, "O my father, hire him. Indeed, the best one you can hire is the strong and the trustworthy." (Surah Al-Qasas, 28:26)

قَالَ إِنِّي أُرِيدُ أَنْ أُنكِحَكَ إِحْدَى ابْنَتَيَّ هَاتَيْنِ عَلَىٰ أَن تَأْجُرَنِي ثَمَانِيَ حِجَجٍ فَإِنْ أَتْمَمْتَ عَشْرًا فَمِنْ عِندِكَ وَمَا أُرِيدُ أَنْ أَشُقَّ عَلَيْكَ سَتَجِدُنِي إِن شَاءَ اللَّهُ مِنَ الصَّالِحِينَ ٢٧

تَأْجُرَنِي tajuranī · you serve me

He said, "Indeed, I wish to wed you one of these, my two daughters, on [the condition] that you serve me for eight years; but if you complete ten, it will be [as a favor] from you. And I do not wish to put you in difficulty. You will find me, if Allāh wills, from among the righteous." (Surah Al-Qasas, 28:27)