S. 10 (23C): Educational institution – Amounts given as donation by relatives of students seeking admission to institution run by Charitable Trust to sister trust — Sister Trust giving amounts to assessee running educational institutions — Amounts given not voluntary contribution But In Reality Capitation Fees — Court Could lift veil of trusts — Not entitled to exemption on sums received from sister Trust – Activities of trust not charitable — Registration to be cancelled – The statements given to the Assessing Officer under section 132(4) had legal force. Unless retractions are made within a short span of time, supported by affidavit swearing that the contents were incorrect and that the statement was obtained under force, coercion and by lodging a complaint with higher officials, they could not be treated as retracted. . [ S.2((15) 11,12, 12AA , 13, 132(4), Tamil Nadu Educational Institutions (Prohibition Of Collection of capitation Fee) Act, 1992 , S.4 ]