``I had requested the CBI to send me a questionnaire to enable me to come fully prepared to answer but the same was not permitted,'' Yadav told a group of reporters.

The former Bihar chief minister said he would extend his full cooperation to the agency in the examination in the disproportionate asset case of the fodder scam.

Yadav criticised the investigating agency for having had conducted raids on chief minister Rabri Devi's official residence and her relatives but said that ``nothing objectionable was found''.

He said he and his wife and other family members, who are income tax assessees, had already filed returns detailing their sources of income and had disputed some of the objections raised by the income tax department.

``CBI is now free to askquestions....I am ready to respond them any number of times,'' Yadav said. Refusing to comment on the justification of registering a fresh disproportionate asset case against him, Yadav said he was ready to fight it in the court of law.

Claiming that he and his family members had not accumulated wealth disproportionate to their known sources of income, the former Chief Minister reposed full faith in the judiciary.

CBI had on October nine summoned Yadav for interrogation in connection with case no 5 (A)/98 which relates to accumulation of wealth worth around Rs 50 lakh, allegedly disproportionate to his known sources of income. The interrogation is likely take place at the agency's headquarters here from 1100 hours tomorrow.