Uproar erupted after Rahul Gandhi tried to quote from an unpublished memoir of former Army chief M M Naravane during the Motion of Thanks debate.
Defence Minister Rajnath Singh and BJP MPs objected, accusing Gandhi of misleading the House; Speaker Om Birla ruled such material cannot be cited.
With both sides refusing to relent, and opposition MPs backing Gandhi, the Lok Sabha was adjourned till 3 pm.