All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah and that Muhammad is His slave and Messenger.
It is an obligation in the sharee'ah to let the beard grow. Ibn ‘Umar narrated that the Prophet said, “Differ from the polytheists; keep your beards and trim your mustaches.” [Al-Bukhari, Muslim and others]
So it is not permissible to shave the beard except for a necessity. If the only way to obtain money and save that child is to shave the beard, then it becomes permissible due to the necessity; Allaah says (what means): {…while He has explained in detail to you what He has forbidden you, excepting that to which you are compelled.} [Quran 6:119]
According to the jurists, the necessity is valued according to its proper value. If what is required can be achieved by trimming the beard, then it is not permissible to totally shave it.
Finally, we advise this brother to seek the help of his Muslim brothers, especially those in charge of Islamic centers and institutions, to consult them about his matter in the hope that they would help him and suffice him from shaving his beard.
Allaah knows best.