The Supreme Court on Tuesday took note of the deterioration and erosion of Shivalingam at the Mahakaleshwar Temple in Madhya Pradesh's Ujjain and directed that devotees should 'do no rubbing' of the lingam. The SC directed the temple committee to ensure that the pH value of 'Bhasma' during 'Bhasma Aarti' is improved and the Shivalingam is preserved from further deterioration.