(3) The persons referred to in clause (c) of sub- section (1) and sub- section (2) are the following, namely:-
the author of the trust or the founder of the institution;
any person who has made a substantial contribution to the trust or institution, 2[ that is to say, any person whose total contribution up to the end of the' relevant previous year exceeds 3[ fifty] thousand rupees];
where such author, founder or person is a Hindu undivided family, a member of the family;
4[ any trustee of the trust or manager (by whatever name called) of the institution;]
any relative of any such author, founder, person, 5[ member, trustee or manager] as aforesaid;
any concern in which any of the persons refer- red to in clauses (a), (b), (c) 6[ , (cc)] and (d) has a substantial interest.