On the 15th day of the Mahabharata war, Drona is instigated by Duryodhana’s remarks of being a traitor. Sensing his end is near, he used the Brahmastra against the common Pandava soldiers. Later he invoked the Brahmanda astra; Drona never imparted this knowledge to anyone, even Arjuna and Ashwatthama. At that moment, all the Sapta Ṛṣis appeared on the sky and requested Drona to retract this ultimate weapon otherwise because of the rampant destruction it would cause. Dronacharya obeyed, retracting the weapon. The rishis continue and berate Drona for violating the rules of war, criticizing him for using divine weapons so indiscriminately. Drona reiterates that he is sworn to do all his can to protect Hastinapur, and that, moreover, he wants to do so for all that Dhritarashtra has given him.