Skandapurana 16.208.9

16.208.9

vedavikrayiṇe caiva yasya copapatirgṛhe ..
strīnirjite ca yaddattaṃ vṛthādānāni ṣoḍaśa .. 9 ..

and to a seller of the Veda, and to him in whose house there is a paramour, / and what is given to one conquered by a woman—these are the sixteen useless gifts. // 9