What was the last requirement Thomas had to meet before receiving his salary and back pay?
وَمَا كَانَ آخِرُ ٱلشُّرُوطِ ٱلَّتِي وَجَبَ أَنْ يَسْتَوْفِيَهَا لِيَتَسَلَّمَ مَعَاشَهُ وَٱلرَّوَاتِبَ ٱلْمُتَأَخِّرَةَ ؟‏