He who worship the departed manes with offerings of sesame seeds is considered as worshipping the deities in all the sacrifices. One should never make a Shraddha with offerings of sesames seeds without entertaining some purpose.
सर्वसत्रैश्च यजते यस्तिलैर्यजते पितॄन्। न चाकामन दातव्यं तिलश्राद्धं कदाचन॥