The curtailed winter session of parliament lost yet another day as the opposition pressed for an apology from Prime Minister Narendra Modi over his allegations that his predecessor, Dr Manmohan Singh, had colluded with Pakistani officials to influence the Gujarat elections. The Lok Sabha-where the Prime Minister was present today for the Question Hour-was adjourned temporarily, the Rajya Sabha for the rest of the day, as slogan-shouting members of the opposition refused to relent.