Hadith 672
It is narrated from Sayyiduna Buraidah (may Allah be pleased with him): A man came to the Messenger of Allah (peace and blessings be upon him) and said, "O Messenger of Allah! I carried my mother on my neck for two farsakhs in such intense heat that if a piece of meat had been placed on it, it would have been roasted. Have I repaid her gratitude?" The Prophet (peace and blessings be upon him) said, "Perhaps this would be in exchange for one birth pang."