No one asked that question to Haider.Who gave the box. Swa know who gave the box.Haider told to Swa before leaving for the wedding.Asad frnd Arvind gave the gift.Swa when she thinks reg how the gift reached the mamu.She will find out about Arvind.Also college principle can also give statement in favour of Asad.Becacuse Yash asked help of Asad in front of college priniciple n with some professors who were also there.
There r proof to proved Asad N Mamu is not terrorist.Once Swa start working on the case she will get proofs.