The Sayyid al-Shuhada Husseiniya (religious center) hosted the event, which was attended by mothers and their infants.
It was held again after two years of suspension due to the coronavirus pandemic.
The gathering included programs such as elegy recitation, Al-Ahed News reported.
The participants renewed their allegiance to Imam Hussein (AS) and Imam Zaman (may God hasten his glad advent).
The congregations of mothers and their babies are held in different countries on the first Friday of the lunar Hijri month of Muharram to remember the 6-month-old infant son of Imam Hussein (AS), Hazrat Ali Asghar (AS), who was mercilessly killed on the day of Ashura in the battle of Karbala in the year 680 AD.
Mothers dress their babies in special green and white clothes, which are said to resemble the clothing of Hazrat Ali Asghar. Babies also wear a headband with the name of Ali Asghar written on it.