ज्ञानोत्कृष्टाय देयानि कव्यानि च हवींषि च । न हि हस्तावसृग्दिग्धौ रुधिरेणैव शुध्यतः ॥ १३२ ॥
Food sacred to the manes or to the gods must be given to a man distinguished by sacred knowledge; for hands, smeared with blood, cannot be cleansed with blood.
english translation