Amitabh Bachchan has an adorable birthday wish for Abhishek Bachchan, who turned 42 on February 5.

Amitabh took to his blog and recalled Abhishek's childhood days as he wrote, "It is beyond thought that the one that sat in wonder by the steps of the house on location, two front fingers in his mouth, hair independent of any set fashion hanging loosely over his broad forehead, a warm jacket keeping the cold of the hills at bay .. watching his Father shoot for his profession, silently."

He further said, "Abhishek .. the enunciation process and prayer to the God's .. even now has that same wonder and questioning nature .. is a lot more quieter than his younger sitting on Father's lap days .. and taller .. but still the nature similarity!"

Big B also posted some pictures of the actor's growing years on Twitter and wrote, "T 2604 - #HBDAbhishekBachchan .. who is in a time zone out of the country .. !! एक समय था पिता पुत्र का हाथ थाम के चलता था ; अब पुत्र हाथ थाम के चलाता है पिता को !"

T 2604 - #HBDAbhishekBachchan .. who is in a time zone out of the country .. !!
एक समय था पिता पुत्र का हाथ थाम के चलता था ; अब पुत्र हाथ थाम के चलाता है पिता को ! pic.twitter.com/JJKQjS02X7

— Amitabh Bachchan (@SrBachchan) February 4, 2018

Abhishek rang in the special day in Australia with wife Aishwarya Rai Bachchan and daughter Aaradhya.