We used to grow beard long except during the Hajj or 'Umrah.

Abu Dawud said: Istihdad means to shave the pubes.
Sunan Abi Dawud Book 35, Hadith 43
← Previous Hadith The Messenger of Allah (ﷺ) fixed forty days to shave the pubes, paring the nails, clipping the moustaches, and plucking the hair under the armpit.

Abu Dawud said: Ja'far b. Sulaiman transmitted it from Abu 'Imran on the authority of Anas. In this version he did not mention the Prophet (ﷺ). He said: Forty days were fixed for us. This is a more correct version.

Sunan Abi Dawud Book 35, Hadith 42 Next Hadith → 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.

Sunan Abi Dawud Book 35, Hadith 44