When the brāhmaṇas got up from bed and saw the waterpot empty, they inquired who had done this work of drinking the water meant for begetting a child.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
उत्थितास्ते निशाम्याथ व्युदकं कलशं प्रभो । पप्रच्छुः कस्य कर्मेदं पीतं पुंसवनं जलम्
utthitāste niśāmyātha vyudakaṃ kalaśaṃ prabho | papracchuḥ kasya karmedaṃ pītaṃ puṃsavanaṃ jalam
SB 9.6.28