Shraddhadipa 5.236

Śrāddhadīpa 5.236

iti vacanāt pārvaṇaśrāddhāśaktau etāni kuryāt
pitṛśrāddhe ravau śukre saptamyāṃ niśi-sandhyayoḥ
saṃkrāntyāṃ janmadivase na kuryāt tilatarpaṇam