SB 6.13.6
sri-suka uvaca
rsayas tad upakarnya
mahendram idam abruvan
yajayisyama bhadram te
hayamedhena ma sma bhaih
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Sri Sukadeva Gosvami said: Hearing this, the great sages replied to King Indra, “O King of heaven, all good fortune unto you. Do not fear. We shall perform an asvamedha sacrifice to release you from any sin you may accrue by killing the brahmana.”