Russian tennis player Elena Vesnina also dropped a heart emoji in the comment box and wrote, "you two."
Dia Mirza, an actress-turned-producer, wished the couple a happy Eid in the comments section.
Sania had previously shared a series of six images with her husband, former Pakistan captain Shoaib Malik, and wished fans a happy Eid.
"Eid Mubarak from us to you. Ps- swipe to see what happens when we attempt to take typical post pics," Mirza wrote in the caption.
Sania returned to the professional tour after recovering from COVID-19 in January this year.
In the quarterfinals of the Qatar Open, she and her doubles partner Andreja Klepac of Slovenia beat Nadiia Kichenok and Lyudmyla Kichenok.
The second-seeded Nicole Melichar and Dutch player Demi Schuurs, however, knocked the pair out of the tournament in a dramatic three-set semi-final 7-5, 2-6, 10-5.
This was Sania's first match in over a year. Coincidentally, the Qatar Open was her last tournament until all tournaments were halted due to COVID-19 in 2020.