Manusmriti
येनास्य पितरो याता येन याताः पितामहाः । तेन यायात् सतां मार्गं तेन गच्छन्न रिष्यति ॥ १७८ ॥
Let him walk in that path of holy men which his fathers and his grandfathers followed; while he walks in that, he will not suffer harm.
english translation
yenAsya pitaro yAtA yena yAtAH pitAmahAH । tena yAyAt satAM mArgaM tena gacchanna riSyati ॥ 178 ॥
hk transliteration by Sanscript