"[That you shall deliver to me the servants of Allah]" means: Send with me the Children of Israel. In the tafsir (interpretation) of Mujahid: "[Indeed, I am to you a trustworthy messenger]" regarding what has come to me from Allah; I neither add anything to it, nor do I decrease anything from it.
﴿أَنْ أَدُّوا إِلَيَّ عِبَادَ اللَّهِ﴾ أرْسلُوا معي بني إِسْرَائِيل؛ فِي تَفْسِير مُجَاهِد ﴿إِنِّي لَكُمْ رَسُولٌ أَمِين﴾ على مَا أَتَانِي من الله، لَا أَزِيد فِيهِ شَيْئا وَلَا أنقص مِنْهُ شَيْئا.
