It is narrated from the Prophet of Islam (PBUH) who said: Avoid stinginess which destroyed your ancestors, stinginess made them lie, which they lied; it made them to oppress, and they oppressed; and made them to cut ties with their relatives, and they cut[1].
[1] Khesal, Sheikh Sadooq, Babal Thalathah, Hadith 234.
The Grand Ayatollah Vahid Khorasani answered a question about shaving the beard when it causes derision (contemptuous ridicule).
Question: Is it allowed to shave the beard when it causes derision?
The Grand Ayatollah Vahid: It is Wajeb precaution that the beard is not shaved unless it causes derision when the wise people cannot stand the derision and humiliation.