The Permissibility of saying “Ya Muhammad” – Part 2
As-Sayyid Shaykh Muhammad bin ‘Alawi al-Makki relates in ‘Notions that must be Corrected’:
Hafiz Ibn Kathir mentioned that the rallying cry of the Muslims at the Battle of Yamama was: ‘O Muhammad!’ (Ya Muhammada). He said: Khalid b. Walid battled them until they passed through the their ranks and went to the mountain of the Masaylama. He was watching closely, waiting to find him and kill him. He then returned to the armies and called for individual one-on-one combat saying “I am Ibn al-Walid the one who returns, I am Ibn Amir and Zayd.” He then called out with the battle cry of the Muslims, and the battle cry on that day was: O Muhammad!
– Al Bidaya wa al-Nihaya, 6:324