Do not pluck out grey hair. If any believer grows a grey hair in Islam, he will have light on the Day of Resurrection. (This is Sufyan's version). Yahya's version says: Allah will record on his behalf a good deed for it, and will blot out a sin for it.  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ تَنْتِفُوا الشَّيْبَ مَا مِنْ مُسْلِمٍ يَشِيبُ شَيْبَةً فِي الإِسْلاَمِ قَالَ عَنْ سُفْيَانَ إِلاَّ كَانَتْ لَهُ نُورًا يَوْمَ الْقِيَامَةِ وَقَالَ فِي حَدِيثِ يَحْيَى إِلاَّ كَتَبَ اللَّهُ لَهُ بِهَا حَسَنَةً وَحَطَّ عَنْهُ بِهَا خَطِيئَةً  

[Machine] The Messenger of Allah ﷺ prohibited plucking the gray hair, and he said, "It is the light of the believer." He also said, "No man becomes gray in Islam except that Allah raises him in rank by it, eradicates an evil from him by it, and writes a good deed for him because of it."  

نَهَى رَسُولُ اللهِ ﷺ عَنْ نَتْفِ الشَّيْبِ وَقَالَ هُوَ نُورُ الْمُؤْمِنِ وَقَالَ مَا شَابَ رَجُلٌ فِي الْإِسْلَامِ شَيْبَةً إِلَّا رَفَعَهُ اللهُ بِهَا دَرَجَةً وَمُحِيَتْ عَنْهُ بِهَا سَيِّئَةٌ وَكُتِبَتْ لَهُ بِهَا حَسَنَةٌ  

[Machine] The Messenger of Allah ﷺ said: "Do not pluck out gray hair, for it is the light of a Muslim. Whoever has gray hair in Islam, Allah will write for him a good deed for every strand of gray hair, and He will erase a sin for him with it, and He will raise him in status with it."  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ لَا تَنْتِفُوا الشَّيْبَ فَإِنَّهُ نُورُ الْمُسْلِمِ مَنْ شَابَ شَيْبَةً فِي الْإِسْلَامِ كَتَبَ اللهُ لَهُ بِهَا حَسَنَةً وَكَفَّرَ عَنْهُ بِهَا خَطِيئَةً وَرَفَعَهُ بِهَا دَرَجَةً  

[Machine] The Messenger of Allah ﷺ said, "Do not pluck out gray hair, as it is a light for the Muslim. Every Muslim who has a gray hair in Islam, a good deed is recorded for him because of it, and he will be elevated in rank or a sin will be removed from him because of it."  

قَالَ رَسُولُ اللهِ ﷺ لَا تَنْتِفُوا الشَّيْبَ فَإِنَّهُ نُورُ الْمُسْلِمِ مَا مِنْ مُسْلِمٍ يَشِيبُ شَيْبَةً فِي الْإِسْلَامِ إِلَّا كُتِبَ لَهُبِهَا حَسَنَةٌ وَرُفِعَ بِهَا دَرَجَةً أَوْ حُطَّ عَنْهُ بِهَا خَطِيئَةٌ  

[Machine] About the Prophet ﷺ said, "Do not pluck out gray hair, as for every Muslim slave who grows gray hair in Islam, Allah writes for him a good deed for it and erases from him a sin through it."  

عَنِ النَّبِيِّ ﷺ قَالَ لَا تَنْتِفُوا الشَّيْبَ فَإِنَّهُ مَا مِنْ عَبْدٍ يَشِيبُ فِي الْإِسْلَامِ شَيْبَةً إِلَّا كَتَبَ اللهُ لَهُ بِهَا حَسَنَةًوَحَطَّ عَنْهُ بِهَا خَطِيئَةً  

A believer does not receive (the trouble) of running a thorn or more than that but Allah elevates him in rank or effaces his sins because of that. (Using translation from Muslim 2572b)   

إِنَّ رَسُولَ اللهِ ﷺ قَالَ مَا مِنْ مُسْلِمٍ يُشَاكُ شَوْكَةً فَمَا فَوْقَهَا إِلَّا رَفَعَهُ اللهُ بِهَا دَرَجَةً وَحَطَّ عَنْهُ بِهَا خَطِيئَةً  

[Machine] The Prophet Muhammad ﷺ said, "Do not pluck out gray hair, as it will be a light on the Day of Judgment. And whoever has gray hair in Islam, good deeds will be written for him because of it, and his sins will be forgiven through it, and he will be elevated in rank because of it."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «لَا تَنْتِفُوا الشَّيْبَ فَإِنَّهُ نُورٌ يَوْمَ الْقِيَامَةِ وَمَنْ شَابَ شَيْبَةً فِي الْإِسْلَامِ كُتِبَ لَهُ بِهَا حَسَنَةٌ وَحُطَّ عَنْهُ بِهَا خَطِيئَةٌ وَرُفِعَ لَهُ بِهَا دَرَجَةٌ»  

[Machine] The Messenger of Allah ﷺ said, "Do not pluck out grey hair, for there is no Muslim who goes grey in Islam except that Allah writes for him with it a good deed and erases with it a sin."  

قَالَ رَسُولُ اللهِ ﷺ لَا تَنْتِفُوا الشَّيْبَ فَإِنَّهُ مَا مِنْ مُسْلِمٍ يَشِيبُ فِي الْإِسْلَامِ إِلَّا كَتَبَ اللهُ لَهُ بِهَا حَسَنَةً وَحَطَّ عَنْهُ بِهَا خَطِيئَةً  

[Machine] The Messenger of Allah ﷺ said, "Do not pluck out gray hair, for surely one of you does not become gray-haired in Islam, except that Allah raises him in rank with it and writes for him a good deed by it, and erases by it a bad deed."  

قَالَ رَسُولُ اللهِ ﷺ لَا تَنْزِعُوا الشَّيْبَ فَإِنَّ أَحَدَكُمْ لَا يَشِيبُ شَيْبَةً فِي الْإِسْلَامِ إِلَّا رَفَعَهُ اللهُ تَعَالَى بِهَا دَرَجَةً وَكَتَبَ لَهُ بِهَا حَسَنَةً وَمَحَا عَنْهُ بِهَا سَيِّئَةً  

"مَا مِنْ مُسْلِم يَشِيبُ شَيبَةً في الإِسْلامِ إِلَّا كتَب الله لَه بهَا حَسَنَةً، وَحَطَّ عَنْه بها خَطيئَةً".  

" لَا تَنْتفُوا الشَّيْبَ فَإِنَّهُ نُورُ الإِسْلَامِ، مَا مِن مُسْلِمٍ يَشِيبُ شَيْبَةً في الإِسْلَا إِلَّا كَانَتْ له نُورًا يومَ الْقِيَامَةِ".  

"لَا تَنْتفُوا الشَّيْبَ فَإِنَّهُ نُورٌ يَوْمَ ألقِيَامَة، وَمَنْ شَابَ شَيْبَةً فِى الإِسْلَامِ كُتِبَ لَهُ بِهَا حَسَنَةٌ، وَحُطَّ عَنهُ بِهَا خَطيْئَةٌ، وَرُفِعَ لَهُ بهَا دَرَجةٌ".