Mohinder Singh Gill & Anr vs The Chiief Election Commissioner, New ... on 2 December, 1977
2. Mohinder Singh Gill vs The Chief Election Commissioner, New
Delhi AIR 1978 SC 851 at para 8 - when a statutory functionary
makes an order based on certain grounds, its validity must be judged by
the reasons so mentioned and cannot be supplemented by fresh reasons
in the shape of affidavit or otherwise. Otherwise, an order bad in the
beginning may, by the time it comes to court on account of a challenge,
get validated by additional grounds later brought out.