Sari ibn al-Mughallis reported: Al-Fudayl ibn ‘Iyad, may Allah have mercy on him, said, “Whoever fears Allah, no one can harm him. Whoever fears another besides Allah, no one can benefit him.”
Source: Shu’ab al-Imān 936
عَنْ سَرِيّ بْن الْمُغَلِّسِ قال الْفُضَيْل بْن عِيَاض رحمه الله مَنْ خَافَ اللَّهَ لَمْ يَضُرَّهُ أَحَدٌ وَمَنْ خَافَ غَيْرَ اللَّهِ لَمْ يَنْفَعْهُ أَحَدٌ
936 شعب الإيمان للبيهقي