The Supreme Court on Friday asked all political parties to submit details of donations received via electoral bond in a sealed cover to Election Commission by May 31. While hearing a plea challenging the validity of electoral bond, the top court said the details would also include the name of the donor and amount. "The transparency and anonymity in donations through electoral bond, raised by petitioner NGO through Prashant Bhushan, raises weighty issues vital to fairness of electoral process," the bench said in its judgment.