1. The Prophet Muhammad said, may Allah's peace and blessings be upon him: Your Heaven lies under the feet of your mother (Ahmad, Nasai).
2. A man came to the Prophet and said, ‘O Messenger of God! Who among the people is the most worthy of my good companionship? The Prophet said: Your mother. The man said, ‘Then who?' The Prophet said: Then your mother. The man further asked, ‘Then who?' The Prophet said: Then your mother. The man asked again, ‘Then who?' The Prophet said: Then your father. (Bukhari, Muslim).
3. Abu Usaid Saidi said: We were once sitting with Rasulullah when a man from the tribe of Salmah came and said to him: O Messenger of Allah! do my parents have rights over me even after they have died? And Rasulullah said: Yes. You must pray to Allah to bless them with His Forgiveness and Mercy, fulfill the promises they made to anyone, and respect their relations and their friends (Abu Dawud and Ibn Majah).