"I went to Safwan bin 'Assal Al-Muradi and he said: 'What brought you here?' I said: 'I am seeking knowledge.' He said: 'I heard the Messenger of Allah say: "There is no one who goes out of his house in order to seek knowledge, but the angels lower their wings in approval of his action.'"  

مَا جَاءَ بِكَ قُلْتُ أُنْبِطُ الْعِلْمَ قَالَ فَإِنِّي سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَا مِنْ خَارِجٍ خَرَجَ مِنْ بَيْتِهِ فِي طَلَبِ الْعِلْمِ إِلاَّ وَضَعَتْ لَهُ الْمَلاَئِكَةُ أَجْنِحَتَهَا رِضًا بِمَا يَصْنَعُ  

[Machine] What brought you here? I said, I came to seek knowledge. He said, I have heard the Messenger of Allah ﷺ saying, "Whenever a person goes out of his house in search of knowledge, the angels lower their wings in approval of what he is doing." I said, I came to ask you about wiping over the socks. He said, Yes, we were in the army that the Messenger of Allah ﷺ sent. He commanded us to wipe over the socks when we put them on while in a state of purity three times, even if we were traveling and did not remove them due to feces or urine.  

مَا جَاءَ بِكَ؟ قُلْتُ جِئْتُ أُنْبِطُ الْعِلْمَ قَالَ فَإِنِّي سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ «مَا مِنْ خَارِجٍ يَخْرُجُ مِنْ بَيْتِهِ يَطْلُبُ الْعِلْمَ إِلَّا وَضَعَتْ لَهُ الْمَلَائِكَةُ أَجْنِحَتَهَا رِضًا بِمَا يَصْنَعُ» قَالَ جِئْتُ أَسْأَلُكَ عَنِ الْمَسْحِ عَلَى الْخُفَّيْنِ قَالَ نَعَمْ كُنَّا فِي الْجَيْشِ الَّذِينَ بَعَثَهُمْ رَسُولُ اللَّهِ ﷺ «فَأَمَرَنَا أَنْ نَمْسَحَ عَلَى الْخُفَّيْنِ إِذَا نَحْنُ أَدْخَلْنَاهُمَا عَلَى طُهُورٍ ثَلَاثًا إِذَا سَافَرْنَا وَلَا نَخْلَعُهُمَا مِنْ غَائِطٍ وَلَا بَوْلٍ»  

"مَا منْ خَارِجٍ خَرَجَ منْ بَيته في طلبِ العلم، إِلَّا وَضَعَتْ لهُ المَلائكةُ أجْنحَتَهَا رِضًا بِمَا يَصْنَعُ حَتَّى يَرْجعَ".