My first grandchild, a grandson was born about 3 months ago,may Allah bless him with a lot of bounties ( rezki ) and the most important is the Iman.
These are prayers and doa from a grandma.
Prayers and doa for our younger generation is part of tarbiah.
Saying lullabies ( la ilaa ha illa Llah repeatedly ) when holding the newly born baby is inculcation of Aqidah Islam to him.
The baby can hear and remember in his mind.
Insya Allah my grandson will be the Imam of tomorrow.