Mahabharata 13.154.32

13.154.32

tasmānmā tvaṃ saricchreṣṭhe śocasva kurunandanam |
vasūneṣa gato devi putraste vijvarā bhava || 32 ||

It behoveth thee not to grieve for him. Agreeably to Kshatriya duties, he was slain by Dhananjaya on the field of battle while engaged in battle. He has not been slain, O goddess, by Sikhandin. The very chief of the celestials himself could not slay Bhishma in battle when he stood with stretched bow in hand. O thou of beautiful face, thy son has, in felicity, gone to heaven. All the gods assembled together could not slay him in battle. Do not, therefore, O goddess Ganga, grieve for that son of Kuru's race. He was one of the Vasus, O goddess! Thy son has gone to heaven. Let the fever of thy heart be dispelled.'