Śrīmad-Bhāgavatam · Text 7.15.4
Who is speaking and story frame
देशकालोचितश्रद्धाद्रव्यपात्रार्हणानि च ।
सम्यग्भवन्ति नैतानि विस्तरात्स्वजनार्पणात् ॥ ४ ॥
deśa-kālocita-śraddhā-
dravya-pātrārhaṇāni ca
samyag bhavanti naitāni
vistarāt sva-janārpaṇāt
If one arranges to feed many brāhmaṇas or relatives during the śrāddha ceremony, there will be discrepancies in the time, place, respectability and ingredients, the person to be worshiped, and the method of offering worship.
Read Śrīla Prabhupāda's purport on Vedabase.io