Skandapurana 5.95.5

5.95.5

ciṃtitaṃ manasā paścātsvayameva mahātmanā ..
mayā tatkarma kartavyaṃ yadanyairiha bhūmipaiḥ ..
na kṛtaṃ na kariṣyaṃti ye bhaviṣyantyataḥ param .. 5 ..

that great-souled one later reflected in his mind by himself:
'I must perform that deed which by other rulers of the earth here
has not been done, nor will be done by those who will exist hereafter.