Travancore Devaswom Board, which manages the shrine in Kerala, also claimed the ban was not discrimininatory and based on "reasonable classification".
"There is no gender discrimination. There is a reasonable classification by which certain class of women are excluded," senior advocate K K Venugopal, representing the Devaswom Board, told a three-judge bench headed by Justice Dipak Misra.
"What is the fulcrum of this classification," the bench asked referring to the bar on entry of women of a particular age group.
Venugopal said girls and women in the age group are excluded as they cannot maintain purity for a period of 41 days due to the mensuration.
"Do you to mean to say that mensuration is associated with with purity of women? You are making distinction based on purity... Now the question is whether the Constitutional principles allow this?" the bench, also comprising Justices V Gopala Gowda and Kurian Joseph, said.
At the outset, Venugopal said women and men both are allowed entry into the temple and hence, there is no case of gender discrimination and females of a particular age group are not allowed due to the centuries-old custom.
There are as many as eight Lord Ayappa temples in Delhi and NCR region and women are allowed inside, he said, adding that the Sabarimala temple is different.
Women are allowed inside in Sabarimala also, but they cannot climb eighteen sacred steps on the hill unless they maintain 41 days of purity, he said, adding that the high court verdict, favouring the practice, is a judgment "in rem" (continuity) and the apex court should not re-examine it by entertaining a PIL.
The arguments remained inconclusive and would resume on May 2.
The court is hearing a PIL, filed by Indian Young Lawyers' Association seeking entry of women into the Sabarimala temple, located on a hilltop in the Western Ghats of Kerala's Pathanamthitta District.
Gender equality is a "constitutional message" and the ban on entry of women of a particular age group into the temple cannot be claimed as a right to manage religious affairs by its management, the court had earlier observed.
It had said it would test the "so-called" custom under the provisions of the Constitution.
Senior advocate Raju Ramachandran, who is assisting the court as an amicus curiae, had said "The practice, which keeps women away and prevents them from worshipping the deity of the shrine because of their biology, is derogatory and detrimental to their dignity".
The court had also said that denying women the right to enter and pray in the historic temple cannot be justified on the basis of traditions which violated constitutional principle.
Recently, Kerala-based organisations -- Hind Navotthana Pratishtan, through its president Swami Bhoomananda Tirtha, and Narayanashrama Tapovanam, through its managing trustee Swami Bhoomananda Tirtha -- had moved the court supporting the PIL seeking entry of women into the temple.
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