Jami` at-Tirmidhi 2312
Abu Dharr narrated that the Messenger of Allah (s.a.w) said:
"Indeed I see what you do not see, and I hear what you do not hear. The Heavens moan, and they have the right to moan. There is no spot, the size of four fingers in them, except that there is an angel placing his forehead in it, prostrating to Allah. By Allah! If you knew what I know, then you would laugh little and you would cry much. And you would not taste the pleasures of your women in the beds, and you would go out beseeching Allah. And I wish that I was but a felled tree." 

[Abu 'Eisa said:] There are narrations on this topic from 'Aishah, Abu Hurairah, Ibn 'Abbas, and Anas. [He said:] This Hadith is Hasan Gharib. It has been related through routes other than this, that Abu Dharr said: "I wish that I was a felled tree." And it has been related from Abu Dharr in Mawquf form.
حَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ، حَدَّثَنَا أَبُو أَحْمَدَ الزُّبَيْرِيُّ، حَدَّثَنَا إِسْرَائِيلُ، عَنْ إِبْرَاهِيمَ بْنِ الْمُهَاجِرِ، عَنْ مُجَاهِدٍ، عَنْ مُوَرِّقٍ، عَنْ أَبِي ذَرٍّ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏
"‏ إِنِّي أَرَى مَا لاَ تَرَوْنَ وَأَسْمَعُ مَا لاَ تَسْمَعُونَ أَطَّتِ السَّمَاءُ وَحُقَّ لَهَا أَنْ تَئِطَّ مَا فِيهَا مَوْضِعُ أَرْبَعِ أَصَابِعَ إِلاَّ وَمَلَكٌ وَاضِعٌ جَبْهَتَهُ سَاجِدًا لِلَّهِ لَوْ تَعْلَمُونَ مَا أَعْلَمُ لَضَحِكْتُمْ قَلِيلاً وَلَبَكَيْتُمْ كَثِيرًا وَمَا تَلَذَّذْتُمْ بِالنِّسَاءِ عَلَى الْفُرُشِ وَلَخَرَجْتُمْ إِلَى الصُّعُدَاتِ تَجْأَرُونَ إِلَى اللَّهِ ‏"‏ ‏.‏ لَوَدِدْتُ أَنِّي كُنْتُ شَجَرَةً تُعْضَدُ ‏.‏ قَالَ أَبُو عِيسَى وَفِي الْبَابِ عَنْ أَبِي هُرَيْرَةَ وَعَائِشَةَ وَابْنِ عَبَّاسٍ وَأَنَسٍ ‏.‏ قَالَ هَذَا حَدِيثٌ حَسَنٌ غَرِيبٌ ‏.‏ وَيُرْوَى مِنْ غَيْرِ هَذَا الْوَجْهِ أَنَّ أَبَا ذَرٍّ قَالَ لَوَدِدْتُ أَنِّي كُنْتُ شَجَرَةً تُعْضَدُ ‏.‏