The decision was taken during a meeting chaired by the new chief of the Broadcasting Content Complaints Council (BCCC), Justice (retd) Vikramajit Sen, amid demands that the serial be banned for its alleged "regressive" content.
The serial, which began airing last month, focuses on a nine-year-old boy, Ratan (Afaan Khan), and his marriage to 18 -year-old Diya (Tejasswi Prakash).
A scroll has to run saying that the show does not promote child marriage and is a work of fiction, said an official from the body.
Though elders are awake at 10 pm, BCCC wants to ensure that minors are not able to see the show, Sen told PTI.
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He added that that they ordered a scroll to be run since they did not want any misinterpretation that the show advocates child marriage.
There was "strong objection" to the show by the National Commission for Protection of Child Rights and National Commission For Women, she said.
"Some of the complaints from viewers said that showing a young boy having a romantic attraction for an older woman is not the material that young kids should be exposed to. It was felt by the Council that at least very young children should not be watching such content," she told PTI.
"Pehredaar Piya Ki" has also been slammed on social media with many viewers accusing it of promoting child marriage.
The TV ombudsman received close to 140 complaints last month from viewers demanding action against the show for promoting child marriage, an official said.
A petition was also started online asking the Information and Broadcasting Ministry to ban the show. The ministry is learnt to have forwarded a complaint regarding the serial to BCCC.
More than one lakh people had signed a petition on change.Org urging Information and Broadcasting Minister Smriti Irani to ban the show.
"We have not received anything yet. As and when we receive it (instructions from the ministry), we will reply to it. We will explain our point of view," the show's producer Sumeet Mittal said earlier.
The BCCC was set up in 2011 by the Indian Broadcasting Foundation (IBF) in consultation with the ministry.
It has been tasked with implementing self regulatory guidelines for "non-news general entertainment channels", the website states.
According to IBF guidelines, BCCC is duty-bound to inform the ministry if channels don't adhere to its decisions. The ministry will then decide on the future course of action, an official explained.