Maṅsajātaka

Suttapiṭaka · Khuddakanikāya · Jātaka (1) · Vol. 27 · Section 560

[560] A son saying "Father!" (tāta) makes the father's heart tremble; such speech is like the heart itself — friend, I give you the heart.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.