The song Dyanoba Mauli tukaram that the dabbawalahs sing in the train during the middle and at the end of the movie is in praise of Sant Tukaram and Dyaneshwar, who were the pioneers of Bhakti movement in Maharashtra. The song is a reference to the varkari tradition of Maharashtra. The word Mauli means mother, a fond moniker for the revered Dyaneshwar.
Ila:
Somwhere I read that the wrong train can lead you to the right station...
Two characters refer to a saying that one Indian rupee is five Bhutanese rupees. The exchange rate of the Bhutanese currency, the Ngultrum, is one Indian rupee, not five. If the saying is about purchasing power, it is an exaggeration: numbeo.com estimates the cost of living in Bhutan's capital is about 75% that of Mumbai.
Hindi
$1,000,000 (estimated)
$44,542 2 March 2014
$4,235,151
$11,621,777