Hazrat Ziyad bin Abi Maryam narrates that Hazrat Sa’d bin Abi Waqqas set out on a journey. Then a deer came towards him, and when it came near him, it turned back and went away. Upon this, someone said to him: O Amir, you should turn back. Hazrat Sa’d said to him: Tell me, from what did you take a bad omen? Was it from its coming when it came towards me, or from its turning back when it went away? Then at that time Hazrat Sa’d also said: Surely, taking bad omens is a branch of shirk (associating partners with Allah).