Luqman: verse 15.
"وصا حبهما في الد نيا معروفا "
With direct translation, this ayah does not only mean to just be good to parents in this world. But the real meaning of this arabic verse is to be concerned constantly on what they need in their life and to provide the needs even before they ask. MashaAllah. Allah is the greatest. So specific and detail. This is one the beauty of Al quran in arabic language.