Discharge more powerful weapons, O Partha, Karna makes these your arrows powerless." Then duly invoking it with mantras Arjuna set the Brahma weapon on his string.
विसृजास्त्रं परं पार्थ राधेयो ग्रसते शरान्। ततो ब्रह्मास्त्रमत्युग्रं सम्मन्त्र्य समयोजयत्॥