Valmiki Ramayana Ayodhya Kanda Sarga 30 Shloka 37

मातापितृपरायणाः people devoted to the service of parents, महात्मानः great men, देवगन्धर्वगोलोकान् the world of the gods, gandharvas, and the cows or Visnu, ब्रह्मलोकम् the world of Brahma, तथा and, अपरान् other worlds, प्राप्नुवन्ति will attain.

Great men who are devoted to the service of their parents attain the world of the gods, of gandharvas, of cows, of Visnu, of Brahma and other worlds.