It is narrated from Sa’d bin Ubaidah, he says: I was sitting with Sayyiduna Abdullah bin Umar (may Allah be pleased with them), then I left a man from Kinda with Sayyiduna Ibn Umar (may Allah be pleased with him) and went to Sa’eed bin Musayyib. That Kinda man, in a state of anxiety, reached there. I said to him: Who is after you? He said: Just now a man came to Sayyiduna Abdullah bin Umar (may Allah be pleased with them) and he swore by the Ka’bah. He (Ibn Umar) said: Swear by the Lord of the Ka’bah, because Sayyiduna Umar (may Allah be pleased with him) used to swear by his father, but the Noble Prophet (peace and blessings be upon him) said to him: Do not swear by your father, because whoever swears by other than Allah has committed shirk (associating partners with Allah).