Amitabh and Jaya are celebrating their anniversary Monday.
"40 years! 40 years of marriage on the 3rd of June 2013! Jaya and I in marriage for 40 years! A lifetime almost," the 70-year-old posted on his blog srbachchan.tumblr.com.
It "seems like just the other evening", Big B posted on his blog, adding: "I had driven with my parents to a friends place on Malabar Hill, in the southern region of the city, and to a very quick, no fuss, no 'taam jhaam', family and a few friends, and a few close media, wedding."
"A wedding that had the fulfilment of a promise, that if 'Zanjeer' succeeded we would get married! Here we are now, two children and three grand children, son-in-law, daughter-in-law, relatives and 'samdhis' in our family fold. God has been very kind," he added.
Amitabh and Jaya have two children - Shweta and Abhishek. Shweta is the elder, and is married to businessman Nikhil Nanda. She got married in 1997 and is now based in Delhi. They have two children - Agastya and Navya Naveli.
Abhishek, a Bollywood actor, is married to former beauty queen-turned-actress Aishwarya Rai. They have a daughter named Aaradhya.
Big B received several anniversary wishes online, and he took to Twitter to thank everyone.
"To all those that wish us a happy anniversary... our gratitude and love and blessings and joy! Thank you," he posted.