10. Now, coming back to Section 153-A, clause ( a ) of sub-section (1) of Section 153-AIPC is attracted when by words, either spoken or written or by signs or by visible representations or otherwise, an attempt is made to promote disharmony or feelings of enmity, hatred or ill will between different religious, racial, language or regional groups or castes or communities. The promotion of disharmony, enmity, hatred or ill will must be on the grounds of religion, race, place of birth, residence, language, caste, community or any other analogous grounds. Clause ( b ) of sub-section (1) of Section 153AIPC will apply only when an act is committed which is prejudicial to the maintenance of harmony between different religious, racial, language or regional groups or castes or communities and which disturbs or is likely to disturb the public tranquillity.