Naradasmriti m2.5

m2.5

mithyaitan nābhijānāmi tadā tatra na saṃnidhiḥ /
ajātaś cāsmi tatkāla evaṃ mithyā caturvidhā //

A denial is fourfold (being couched in any one out of the four forms hereafter mentioned). 'This is false,' or 'I do not know anything about it,' or 'I was not present at the transaction,' or 'I was not in existence at the time when this event took place.'