Maricismriti 1.21: Nirṇayasindhu · Kālasāra · Gadādharapaddhati

1.21

pretaṃ pitṝṃś ca nirdiśya bhojyaṃ yat priyam ātmanaḥ | śraddhayā dīyate yatra tac chrāddhaṃ parikīrtitam

That which is offered with faith, designating the deceased and the ancestors, / of food pleasing to oneself—that is declared to be a śrāddha.

Where food dear to oneself is given with faith, naming the departed and the ancestors, that is called śrāddha.