In Qom, its a tradition to take 6 month old children and pay allegiance to Imam Mahdi atfs. It's called Rasm of Ali Asgar, This video ends with Nauha "Asgar Gaye Asgar". Please do comment regarding the Rasm of Ali Asgar. Hazrat Ali Asgar was 6 month old of Imam Hussain, who was brutally killed by the army of Yazeed. Hazrat Ali Asgar died Thirsty and 9th Muharram is remembered in his remembrance.