Kulasekaran's long rule of about four decades was one of peace and prosperity according to the foreign travelers who visited the Pandyan country during his reign. The Persian historian
Abdulla Wassaf of
Shiraz describes the country under Kulasekaran as the most agreeable abode on earth and the most pleasant quarter of the world. He also claims that an Arab Muslim named Takiuddin Abdur Rahman, son of Muhammadut Tibi, was appointed by Kulasekara Pandyan as the prime minister and adviser. He was also bestowed with the coastal cities of
Kulasekharapatnam,
Kayalpattinam, Fitan and Mali Fitan for his services to the crown. He gifted a piece of land from his leisure park (Vasantha mandapam) to Kazi Syed Tajuddeen who came from Oman and settled in
Madurai. Kazi Syed Tajuddeen constructed a mosque named
Kazimar Big Mosque which is still in existence and has been managed by his male descendants continuously for 7 centuries. Wassaf's accounts which refer to Kulasekaran as
Kales Dewar say he ruled for "forty and odd" years, "during which time neither any foreign enemy entered his country, nor any severe malady confined him to bed" and that the treasury of the city of Mardi (Madurai) had "1,200 crores of gold not counting the accumulation of precious stones such as pearls, rubies, turquoises, and emeralds." The term "crore" here means a "hundred thousand" as per the now-defunct Persian number system. It must be mentioned that Wassaf himself never visited any part of India and is generally considered an unreliable source by scholars. The
Mahavamsa, while describing the Pandyan plunder of the tooth relic, describes Kulasekaran as "like a sun expanding the lotus-like race of the great Pandyan kings."
Marco Polo visited the Pandyan country during his reign and wrote about the wealth and social customs of Pandyan people. His accounts refer to Kulasekaran as
Asciar or
Ashcar. Marco Polo describes the Pandyan port city of Kulasekharapatnam as "it is at this city that all the ships touch that come from the west, as from Hormos and from Kis and from Aden, and all Arabia, laden with horses and with other things for sale." Lighthouses can still be seen along the shore which were used to direct ships. In Kulsekarapatnam, small ships known as
dhoni operated until 1965. Kulasekharapatnam still has a light house near
Manapad, leading to the conclusion that the place Marco Polo mentioned is Kulasekharapatnam
. He also wrote about the pearl fisheries, horse trade,
sati and
devadasis. Also in Kulasekharapatnam now even called
Rowther Palayam that a part of it,
Rowthers a section of Muslim called like that their cavalry and trade with horses. Kulasekaran built the Manivanneswaram aka
Masilamaninathar temple in
Tharangambadi. He also built the outer wall of the
Thirunelveli Nellaiappar temple. He was given the titles of () meaning "Conqueror of
Kollam" and () meaning "King without equal". Except for the Alwar Thirunagari inscription, all of Kulasekaran's inscriptions do not contain any
Meikeerthi. The Alwar Thirunagari inscription from his fourth year of reign (1272 CE) praises him as (). ==Death and civil war==