Skandapurana 6.3.72.6

6.3.72.6

athavā prāpsyate tāta vidyādānasya yatphalam .
tatphalaṃ prāpyate nityaṃ kathāśravaṇato hareḥ .. 72.6 ..

Or rather, father, whatever fruit of imparting knowledge is obtained,
that fruit is perpetually obtained from hearing the story of Hari.