Hadith 2729
It is narrated from Ubaid bin Umair that he asked Sayyiduna Ibn Umar (may Allah be pleased with them), "What is the reason that I see you only touching the Hajar Aswad and the Yemeni Corner?" So Sayyiduna Ibn Umar (may Allah be pleased with them) replied, "If I only touch these two corners, (the reason is that) I heard the Messenger of Allah (peace and blessings be upon him) say, 'Touching these two corners is a cause for the forgiveness of sins.'"
Hadith 2730
A narration similar to the above-mentioned hadith is reported from Sayyiduna Ibn Umar (may Allah be pleased with them both).