The black and white painting shows a couple in love. The woman is seen sporting a red bindi in the artwork.
"Bajrangi bhaijaan", Salman captioned the post.
The 49-year-old "Dabangg" star also shared the Hindi poster of the upcoming film, which is directed by Kabir Khan and co-produced by Salman and Rockline Venkatesh.
The film, which also stars Nawazuddin Siddiqui and Kareena Kapoor Khan, is set to hit screens on Eid-ul-Fitr which is likely to be celebrated on July 18.