It is said in this Purānas, that Purandara, sullied by the sin consequent upon slaying a Brāhmaṇa, was again purified by celebrating a horse sacrifice.
श्रूयते हि पुरावृत्तं वासवे सुमहात्मनि। ब्रह्महत्यावृतः शक्रो हयमेधेन पावितः॥