عَنْ مُحَمَّدِ بْنِ جُبَيْرِ بْنِ مُطْعِمٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَوْفٍ رَضِيَ اللَّهُ عَنْهُ قَالَ: خَرَجَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ (وَفِي رِوَايَةٍ: دَخَلْتُ الْمَسْجِدَ فَرَأَيْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ خَارِجًا مِنَ الْمَسْجِدِ) فَاتَّبَعْتُهُ حَتَّى دَخَلَ نَخْلًا فَسَجَدَ فَأَطَالَ السُّجُودَ، حَتَّى خِفْتُ أَوْ خَشِيتُ أَنْ يَكُونَ اللَّهُ قَدْ تَوَفَّاهُ أَوْ قَبَضَهُ، قَالَ: فَجِئْتُ أَنْظُرُ فَرَفَعَ رَأْسَهُ، فَقَالَ: ((مَا لَكَ يَا عَبْدَ الرَّحْمَنِ؟)) قَالَ: فَذَكَرْتُ ذَلِكَ لَهُ، فَقَالَ: ((إِنَّ جِبْرِيلَ عَلَيْهِ السَّلامُ قَالَ لِي: أَلَا أُبَشِّرُكَ؟ إِنَّ اللَّهَ عَزَّ وَجَلَّ يَقُولُ لَكَ مَنْ صَلَّى عَلَيْكَ صَلَّيْتُ عَلَيْهِ وَمَنْ سَلَّمَ عَلَيْكَ سَلَّمْتُ عَلَيْهِ))
It is narrated from Sayyiduna Abdur Rahman bin Awf (may Allah be pleased with him), he says: I entered the mosque and when I saw the Messenger of Allah (peace and blessings be upon him) coming out of the mosque, I followed behind him, until he entered a date-palm garden and performed a prostration, and he remained in prostration for so long that I began to fear that Allah Almighty had caused him (peace and blessings be upon him) to pass away. So I came close to him (peace and blessings be upon him) to see him, and at that moment he (peace and blessings be upon him) raised his head and said: O Abdur Rahman! What has happened to you? I told him (peace and blessings be upon him) the whole matter. Upon hearing this, he (peace and blessings be upon him) said: Jibreel (peace be upon him) said to me: Shall I not give you the glad tidings that Allah Almighty has said to you that whoever sends blessings upon you, I will send mercy upon him, and whoever sends peace upon you, I will send peace upon him.