Answered by Ustadha Zaynab Ansari, SunniPath Academy Teacher
While praying in jama’ah at the masjid, can I have my 3 year old stand next to me in line with others?
In the name of Allah, Most Compassionate, Most Merciful,
From what I have studied in the Reliance, it would not be impermissible. But you should make sure that your child understands that she shouldn’t fidget or move around a lot. If she steps out of place, you should move to fill up the spot so the row will be complete. Here is a link that goes into more detail:
Children in the Masjid: The fiqh of children standing in the prayer lines
I pray that this is helpful.