धर्मो हि परमो लोके धर्मे सत्यं प्रतिष्ठितम् ।
धर्मसंश्रितमेतच्च पितुर्वचनमुत्तमम् ॥
- रामायण, अयोध्या
Nothing is above the Dharma (the moral code of life). There is no greater truth than dharma. Following one's father's advice is hence the first thing to do (given that his advice is according to dharma).
- Ramayana, Ayodhya