None of you truly believes until…
لَا يُؤْمِنُ أَحَدُكُمْ حَتَّى يُحِبَّ لِأَخِيهِ مَا يُحِبُّ لِنَفْسِهِ
La yu'minu ahadukum hatta yuhibba li-akhihi ma yuhibbu li-nafsih.
"None of you truly believes until he loves for his brother what he loves for himself."
Narrated by Anas ibn Malik. Sahih al-Bukhari 13, Sahih Muslim 45 · Nawawi's Forty · #13
A short reflection
If you hope for a raise, do you hope for your colleague's too? Until you do, something is missing.