It is the duty of an attorney and counselor at law never to reject for any consideration personal to himself, the cause of the defenseless or the oppressed.

Source: PolC 1877, ch 18, § 4, subdiv 7; CL 1887, § 465, subdiv 7; RPolC 1903, § 697, subdiv 7; RC 1919, § 5262 (7); Supreme Court Rule 13, 1939; SDC 1939 & Supp 1960, § 32.1201 (7).