India, Sept. 6 -- Actor Hrithik Roshan got nostalgic and shared unseen childhood photos to wish his father, filmmaker Rakesh Roshan, on his 76th birthday. Taking to Instagram on Saturday, Hrithik also penned a note of gratitude. He thanked Rakesh Roshan for building resilience in him, and for "being the best teacher one could ask for."

The photos showed a young Hrithik celebrating his birthday with his family as Rakesh placed the candles on the cake and clapped, standing next to him. Another picture showed Hrithik sitting on Rakesh's lap as the family got together for a photo. Another family photo featured Hrithik and Rakesh with Pinkie Roshan and Sunaina Roshan.

A few pictures also featured a young Hrithik with Rakesh on his film sets,...