The answer to this question will cement my values in life forever!
I learned from Bhisma's life that simply being the most honorable, noble person on Earth doesn't guarantee any good at all! I think in Star Plus's Mahabharat (I know these TV adaptations are never accurate depictions), Krishna replies to Bhisma's rationalization of how honorable and noble; a man he was, with a simple retort: "If you were the perfect human being as you say you were, how come we're having this conversation in a battlefield? Why are we at war then, if you say you upheld Dharma so well?"
When folks in the hall where actually rationalizing and trying to cite rules of paap and punya to somehow ensure the disrobing of Draupadi.
Krishna on many occasions breaking his own vows at Kurukshetra for the greater good (I'm not saying we can do it just because God did it) and really manipulating the situation so the good prosper and the evil perish.
This brought to me a major awakening that Dharma is something that will never be understood, even if Vedas are eternal truths, you can't put instructions for every possible permutation of every combination of every life situation that was to occur in the Vedas, and that's why the only way of upholding Dharma, is if Vishnu himself steps down in his avatars and purges us!
That brings me to my original question! Is there a specific line in the Vedas that say, 'You can ignore the Vedas or scriptural obligations based on the practicality of the situation!'