Sanskrit Shloka on Parenting with age

लालयेत्पञ्च्वर्षाणि दशवर्षाणि ताडयेत् 
प्राप्ते तु षोडशे वर्षे पुत्रं मित्रवदाचरेत्  
Laalayet PanchvarshaNi Dash VarshaNi TaDyet
Prapte tu ShoDshe Varshe, Putr Mitra Vadacharet

Meaning:
Upto the age of 5 (Panch - Varshaani)
Love your child a lot (Laalayet)
Upto the age of 10, (Dash - Varshaani)
Be strict with him (TaaDyet)

But when the child reaches the age of 16 (Shodashe)
Treat him like a friend. (Putr Mitra Vadaacharet)