Hadhrat Khalid bin Walid (May Allah be well pleased with him) participated in many battles. The opposing army would be many times greater than the Muslim army. Still, Hadhrat Khalid bin Walid (May Allah be well pleased with him) would come back victorious. Hadhrat Khalid (May Allah be well pleased with him) himself says, “The Holy Prophet (Sallallahu alaihi wa sallam) performed an Umrah and ordered His head to be shaved. Other people were taking the hair which were on the sides of His head. I went forward and took the hair which were on the top of His head i.e. the hair above the forehead and kept those hair in my cap. Whenever I wore this cap in any battle, I was helped and returned victorious.” (Khasais Kubra Vol 1, Pg No: 68, Fath ul Bari bab manaqibi Khalid ibn al Walid raziallahu anhu, Vol 7, Pg No: 471, Hujjatullahi alal alameen Pg No: 489)