25-Surah Al-Furqan (The Criterion ) 29
He led me away from the remembrance after it had come to me. And ever is Satan, to man, a deserter.’
لَّقَدْ أَضَلَّنِي عَنِ الذِّكْرِ بَعْدَ إِذْ جَاءَنِي ۗ وَكَانَ الشَّيْطَانُ لِلْإِنسَانِ خَذُولًا
Quran's Tafhim ( explanation)
*40) "Satan has proved very treacherous to man" may also be a part of the disbelievers' lament, or it may be a remark by AIIah, in which case the meaning will be: "And Satan is indeed the one who always deceives man."