Parents

Quran:17:23-24:but Him and that you be kind to parents. Whether one or both of them attain old age in your life, say not to them a word of contempt, nor repel them, but address them in terms of honor. And out of kindness, lower to them the wing of humility and say, "My Lord! Bestow on them Your Mercy even as they cherished me in childhood.""Your Lord has decreed that you worship none
Q:4:36:Worship God and join not any partners with Him; and be kind to your parents..."
Q:31:14:And We have enjoined on man [to be good] to his parents: in travail upon travail did his mother bear him and his weaning was over two years. Be thankful to Me and to your parents, unto Me is the final destination."
Q:46:15:"And We have enjoined upon man, to his parents, good treatment. His mother carried him with hardship and gave birth to him with hardship, and his gestation and weaning [period] is thirty months. [He grows] until, when he reaches maturity and reaches [the age of] forty years, he says, "My Lord, enable me to be grateful for Your favor which You have bestowed upon me and upon my parents and to work righteousness of which You will approve and make righteous for me my offspring. Indeed, I have repented to You, and indeed, I am of the Muslims."
Q:2:83:And remember We took a covenant from the Children of Israel (to this effect): Worship none but Allah; treat with kindness your parents and kindred, and orphans and those in need; speak fair to the people; be steadfast in prayer; and practice regular charity. Then did ye turn back, except a few among you, and ye backslide (even now)."
Sahih-Muslim:7/2:5971:A man came to the Prophet (PBUH) and said: O Messenger of Allah! Who from amongst mankind warrants the best companionship from me? He replied: “Your mother.” The man asked: Then who? So he replied: “Your mother.” The man then asked: Then who? So the Prophet replied again: “Your mother.” The man then asked: Then who? So he replied: “Then your father.”