Bihar Chief Minister Nitish Kumar on Saturday nudged Congress Vice President Rahul Gandhi to take a stand on corruption charges against Lalu Yadav's son and his deputy Tejashwi Yadav and get him to step down. Mr Kumar has not set a clear deadline but sources said the Chief Minister is keen that a decision on the 28-year-old Deputy Chief Minister is taken within the next week, well before he has to face the opposition in the Bihar assembly that meets on July 28.