عَنْ أَبِي سَعِيدٍ رَضِيَ اللَّهُ عَنْهُ
قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا يَحْقِرْ أَحَدُكُمْ نَفْسَهُ، قَالُوا: يَا رَسُولَ اللَّهِ كَيْفَ يَحْقِرُ أَحَدُنَا نَفْسَهُ؟
قَالَ: يَرَى أَمْرَ الِلَّهِ عَلَيْهِ فِيهِ مَقَالٌ، ثُمَّ لَا يَقُولُ فِيهِ، فَيَقُولُ اللَّهُ عَزَّ وَجَلَّ لَهُ يَوْمَ الْقِيَامَةِ: مَا مَنَعَكَ أَنْ تَقُولَ فِي كَذَا وَكَذَا؟ فَيَقُولُ: خَشْيَةُ النَّاسِ، فَيَقُولُ: فَإِيَّايَ كُنْتَ أَحَقَّ أَنْ تَخْشَى»
(radiyallahu anhu), who said that the Messenger of Allah (sallallahu alayhi wa sallam) said: Let not any one of you belittle himself. They said: O Messenger of Allah, how can any one of us belittle himself?
He said: He finds a matter concerning Allah about which he should say something, and he does not say [it], so Allah (mighty and sublime be He) says to him on the Day of Resurrection: What prevented you from saying something about such-and-such and such-and-such? He say: [It was] out of fear of people.
Then He says: Rather it is I whom you should more properly fear. It was related by Ibn Majah with a sound chain of authorities.