Kansa addresses his friends, announces their danger and orders male children to be put to death - Verse 20
Vishnu Purana (GRETIL; M. M. Pathak critical edition) · 4 · Verse 4.20
Sanskrit Original
तं चाह भगवान उक्तम एवैतन मया पौत्रस ते त्रिदिवाद गङ्गां भुवम आनयिष्यतीति। तदम्भसा संस्पृष्टेष्व अस्थिभस्मस्व एते स्वर्गम आरोक्ष्यन्ति। भगवद्विष्णुपादाङ्गुष्ठविनिर्गतस्य जलस्य हि तन्माहात्म्यम।।
taṃ cāha bhagavān uktam evaitan mayā pautras te tridivād gaṅgāṃ bhuvam ānayiṣyatīti| tadambhasā saṃspṛṣṭeṣv asthibhasmasv ete svargam ārokṣyanti| bhagavadviṣṇupādāṅguṣṭhavinirgatasya jalasya hi tanmāhātmyam||
The Lord said, 'I have declared that your grandson will bring the Ganges from the heavens to the earth. Those who are touched by its ashes will attain heaven. The water that emanates from the toe of Lord Vishnu is indeed of great sanctity.'