श्राद्धकल्पे पितृदेवपूजाक्रमः (Śrāddhakalpa: Order of Pitṛ and Deva Worship)
रक्षणं चैव श्राद्धस्य आतिथ्यस्य विधिद्वयम् / भूतानां देवतानां च पितॄणां चैव कर्मणि
rakṣaṇaṃ caiva śrāddhasya ātithyasya vidhidvayam / bhūtānāṃ devatānāṃ ca pitṝṇāṃ caiva karmaṇi
The safeguarding of the śrāddha and the twofold ordinance of hospitality are prescribed as rites in the duties owed to bhūtas, to the Devas, and to the Pitṛs.