Surah Al-Qasas (The Stories), Verse 35

قَالَ سَنَشُدُّ عَضُدَكَ بِاَخِیْكَ وَنَجْعَلُ لَكُمَا سُلْطٰنًا فَلَا یَصِلُوْنَ اِلَیْكُمَا بِاٰیٰتِنَا اَنْتُمَا وَمَنِ اتَّبَعَكُمَا الْغٰلِبُوْنَ ۟

Qaala sanashuddu 'adudaka bi akheeka wa naj'alu lakumaa sultaanan falaa yasiloona ilaikumaa; bi Aayaatinaa antumaa wa manit taba'akumal ghaaliboon

“He said: "We will certainly strengthen thy arm through thy brother, and invest you both with authority, so they shall not be able to touch you: with Our Signs shall ye triumph,- you two as well as those who follow you."”

Quran 28:35 (Yusuf Ali Translation)