beyond cavil of doubt that no one can be permitted to take undue and unfair advantage of his own wrong to gain favourable interpretation of law. It is a sound principle that he who prevents a thing from being done shall not avail himself of the non- performance he has occasioned. To put it differently, ‘a wrong doer ought not to be permitted to make profit out of his own wrong’. The 12conduct of the respondent-writ petitioner is fully covered by the aforesaid proposition. 20. The respondent-writ petitioner participated in the tender process without raising any issue about Clause-8 of the auction notice. The highest bidder Shri. Pritam Das did not come forward to execute the contract thus, the respondent became the highest bidder and was offered the work in question. The respondent accepted the same with open eyes. However, in order to avoid full compliance of Clause-8 of auction notice, the respondent went on to file a civil suit. Having participated in the tender proceedings with