Mahabharata 13.100.15

यदा श्राद्धं पितृभ्यश्च दातुमिच्छेत मानवःतदा पश्चात्प्रकुर्वीत निवृत्ते श्राद्धकर्मणि

yadā śrāddhaṃ pitṛbhyaśca dātumiccheta mānavaḥtadā paścātprakurvīta nivṛtte śrāddhakarmaṇi

Our plain-language meaning of this verse is waiting for scholar review.