Obedience towards One’s Parents
قَالَ رَسُولُ اللٌّهِ (ص): مَنْ أَصبَحَ مُطِيعاً لِلٌّهِ فِي الْواَلِدَينِ أَصبَحَ لَهُ بَابَانِ مَفْتُوحَانِ مِنَ الْجَنَّةِ وَ إِنْ كَانَ وَاحِداً فَوَاحِداً
The Messenger of Allah (peace be upon him and his family) said: “One, who follows the orders of Allah with regards to obeying parents, shall have two doors of Paradise opened up for him. And if there happens to be only one parent, one door of Paradise shall open up for him.”
Kanzul `Ummal, Volume 16, Page 67
Other links:
The Most Beloved Deed