4:109 Oh, you might well argue in their behalf in the life of this world: but who will argue in their behalf with God on the Day of Resurrection, or who will be their defender?
Muhammad Asad (The Message Of Quran)
Dictionaries
Ejtaal Arabic Almanac: Lane's Lexicon, Hans Wehr, Lisan al-Arab and others
for, whoever on that day turns his back on them-unless it be in a battle manoeuvre or in an endeavour to join another troop [of the believers] - shall indeed have earned the burden of God's condemnation, and his goal shall be hell: and how vile a journey's end!