tst001

Hi

i am travelling from canada toronto to Hyderabad.

1. Canada to London HEATHROW (AI 7312)
2. HEATHROW to MUMBAI, INDIA (AI 130) : Terminal 2
3. MUMBAI, INDIA to HYDERABAD , INDIA (AI 615) : Terminal 2 Dom and intl

my question is
as per agent/travel desk my baggage is checked in till end destination Hyderabad and immigration will taken place at Mumbai.

1. if i buy liquor from duty free in canada will india customs allow to carry from mumbai to hyderabad in hand baggage or i have to check in.
or
2. if i buy in mumbai, will customs allow me take as hand baggage or i have to check in