Ibn ‘Umar (may Allaah be pleased with them both) narrated that the Messenger of Allaah (peace and blessings of Allaah be upon him) said:
“Three men went out walking and rain began to fall on them. They entered a cave in a mountain, then a rock fell (blocking the entrance to the cave). They said to one another, Pray to Allaah by virtue of the best deeds that you have done. One of them said, O Allaah, my parents were elderly and I used to go out and tend to my flocks, then I would milk them and bring the milk to my parents for them to drink from it, then I would give some to my children. One night I came home late and found them sleeping. I did not want to wake them, and the children were crying at my feet. I kept waiting and the children kept crying until dawn broke. O Allaah, if You knew that I did that for Your sake, then open a way for us through which we can see the sky. So a way was opened for them…”
(Narrated by al-Bukhaari, 2102; Muslim, 2743).
“And We have enjoined on man to be dutiful and kind to his parents. His mother bears him with hardship. And she brings him forth with hardship…” [al-Ahqaaf 46:15]