The retiring legend almost singlehandedly guided Mumbai to a four-wicket victory, scoring an unbeaten 79, in one of the most keenly followed matches in the history of Ranji Trophy, here on Wednesday.
"It's important for Sachin and considering the two Tests against the West Indies next month, this has given him much-needed practice. And remember, Haryana has got a good attack and they bowled a disciplined attack," Zaheer told reporters after the match.
Tendulkar, 40, will be walking into international sunset after the rubber against the Caribbean side, and Zaheer has been associated with the veteran for almost a decade and a half.
"It's very difficult to sum up my association with Sachin in one minute. It's been very special, his records speak volumes of the man. He has truly been a master.
"We just want him to enjoy the last two Tests, the way he has always enjoyed...make the most of it."
The left-arm pacer is on a comeback trail and seemed hopeful of returning to the Indian team.
"I am trying to do whatever is in my hand. I have got good match practice by playing the two India A matches.
"I am getting better...bowling fitness is something I am working on. I am feeling confident, it's just about spending more and more time on the field. Match practice is the best practice as it helps the overall game," he said.