Imām ʿAbd al-ʿAzīz ibn ʿAbdullāh ibn Bāz (raḥimuhullāh) said:1
As for the beard, it is impermissible to shave it or take anything from it at any given time; rather it is an obligation to let it grow due to that which has been affirmed in the Ṣaḥīḥayn (Bukhārī and Muslim) on the authority of Ibn ʿUmar (raḍi Allāhu ʿanhu) who said, the Prophet (ﷺ) said:
‘Oppose the polytheists, lengthen the beard and clip the moustaches.’
Likewise, Imām Muslim collected in his Ṣahīh, on the authority of Abū Hurayrah (raḍi Allāhu ʿanhu) who said, the prophet (ﷺ) said: ‘Trim the mustaches and grow the beards, oppose the Fire-Worshipers (Majūs).’
This calamity has become greater in this time of ours due to many of the people opposing this Sunnah and waging war against (growing) the beards, and them being pleased with looking like women and disbelievers (by not growing their beards), nevertheless, even those who associate themselves with knowledge and educating [fall into this calamity of trimming the beard]. Verily to Allāh we belong and to Him we shall return.
We ask Allāh to guide us and guide all of the Muslims to accept the Sunnah, adhere to it and call towards it, even if most of the people turn away from it. Allāh (alone) is sufficient for us, and He is the best disposer of affairs, there is no might nor power except with Allāh the Most High and Exalted.
 al-Taḥqīq wa-al-Īḍāḥ p.39
Translated by: Munīb al-Ṣumālī