"Having considered the content in the writ petition, we consider it to issue show cause notice to the petitioner (Sharma) why he should not be debarred from canvasing any PIl on account of irresponsible and scandalous allegations levelled by him in the petition," the bench, also comprising Justices J Chelameswar, M B lokur, Kurian Joseph and Adarsh Kumar Goel, said in its order.