Valmiki Ramayana Ayodhya Kanda Sarga 111 Shloka 11
Original Shlokaस हि राजा जनयिता पिता दशरथो मम। आज्ञातं यन्मया तस्य न तन्मिथ्या भविष्यति।।2.111.11।।
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मम my, पिता father, सः that, राजा दशरथः king Dasaratha, जनयिता हि he begot me, मया by me, तस्य to him, यत् whatever, आज्ञातं was promised, तत् that one, मिथ्या false, न भविष्यति shall not become.
King Dasaratha is my father who begot me. The promise I made him shall not prove false.