Russell v Russell is related to which of the following matters in Hindu law?

Russell v Russell is the English matrimonial-cruelty authority cited in Indian matrimonial decisions, including Kusum Lata. Its subject is cruelty, not desertion, adultery or leprosy. Its historical danger-to-life, limb or health formulation should not be treated as the sole modern HMA test: the amended Act recognises cruelty as a divorce ground and Indian decisions assess mental as well as physical cruelty.