Sayyiduna Anas bin Malik (may Allah be pleased with him) says: On the day of the battle of Yamamah, I passed by Thabit bin Qays bin Shammas (may Allah be pleased with him) while he was applying hanut (the perfume used for the dead). I said: Uncle, do you not see what the Muslims are facing, and you are here? He smiled and said: Right now, my nephew. He put on his weapons, mounted his horse and reached the ranks, and said: Woe to these people and to what they are doing. And he said to the enemy: Woe to these people and to what they worship. (Then he said:) Clear the way for it, or he said: clear its path (meaning his horse), so that I may enter the heat of it (the battle). Then he charged, fought and was martyred.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 17919