The offerings with Svaha and Svadha in Shraddhas and sacrifices are always solicited from children by the Pitris and the deities.
नित्यं स्वाहा स्वधा नित्यं चोभे मानुषदैवते। पुढेष्वाशासते नित्यं पितरो दैवतानि च।॥