Saastram speaks -15
This sloka is from the third chapter of manu smriti.
दैवकार्यात् द्विजातीनां पितृकार्यं विशिष्यते।
दैवं हि पितृकार्यस्य पूर्वम् आप्यायनं स्मृतम्।। (3, 203)
daivakāryāt dvijātīnāṁ pitṛkāryaṁ viśiṣyate|
daivaṁ hi pitṛkāryasya pūrvaṁ āpyāyanaṁ smṛtam||
For a Brahmin performing ceremonies for their ancestors (Shraadha) takes precedence over worshipping gods.
During ceremonies the act of worshipping gods is more to please ones ancestors.
द्विजातीनां – for a Brahmin, पितृकार्यं – rites in honour of the ancestors (shraadha), दैवकार्यात् – is more important than the rites in honour of gods, विशिष्यते- prescribed.
पितृकार्यस्य- ancestral rites, पूर्वम् – before, दैवं हि – worshipping the gods, आप्यायनं स्मृतम् – is considered as pleasing or satisfying the ancestors.