Musannaf Ibn Abi Shaybah 15666 — Which corners are touched

It is narrated from Ata that when Sayyiduna Umar (may Allah be pleased with him) performed Hajj, he touched the Black Stone, while Sayyiduna Ya'la bin Umayyah (may Allah be pleased with him) touched all the corners. Sayyiduna Umar said to him: "O Ya'la, what is this you have done?" Sayyiduna Ya'la said: "I touched all the corners, because there is nothing of the Ka'bah that should be left (without being touched)." Sayyiduna Umar said: "Did you not see that the Prophet (peace and blessings be upon him) touched only the Black Stone?" Sayyiduna Ya'la said: "Certainly." Sayyiduna Umar said: "Then do you not have an example in that?" Sayyiduna Ya'la said: "Certainly."