New Delhi: Home Minister Amit Shah hit back at Congress for criticizing Rajnath Singh's "shastra puja" during Tuesday's Rafale jet handover ceremony in France, saying the big old party must introspect the issues that need to be criticized.Not performing ' shashtra pujan ' on Vijayadashami? They should think about what needs to be questioned and whatnot, "Amit Shah said during a rally in Kaithal, Haryana. The BJP alleged that the Congress has a problem with Indian customs and traditions and that it is against modernisation of the Air Force.