Zurara b. Aufa told that God's messenger asked Gabriel, "Have you seen your Lord?" Gabriel trembled and replied, "Between Him and me, Muhammad, there are seventy veils of light, and if I approached one of them I would be burned." Thus, it is given in al-Masabih. Abu Nu'aim transmitted it in al-Hilya on the authority of Anas, but did not mention that Gabriel trembled.
Source: sunnah.com
Other translations
Arabic
وَعَن زُرَارَة بن أوفى أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ لِجِبْرِيلَ: " هَلْ رَأَيْتَ رَبَّكَ؟ فَانْتَفَضَ جِبْرِيلُ وَقَالَ: يَا مُحَمَّدُ إِنَّ بَيْنِي وَبَيْنَهُ سَبْعِينَ حِجَابًا مِنْ نُورٍ لَوْ دَنَوْتُ مِنْ بَعْضِهَا لاحترقت «. هَكَذَا فِي» المصابيح " وَرَوَاهُ أَبُو نُعَيْمٍ فِي «الْحِلْيَةِ» عَنْ أَنَسٍ إِلَّا أَنه لم يذكر: «فانتفض جِبْرِيل»
sunnah.com