The first bench comprising Chief Justice Indira Banerjee and Justice M Sundar reserved the orders without specifying any date.
The MLAs were disqualified by Tamil Nadu Assembly Speaker P Dhanapal on September 18 last year under the anti-defection law on a plea by the ruling party's whip after they had met the state governor and expressed their lack of confidence in the chief minister.
The MLAs had met the governor on August 22, a day after then rival factions led by Chief Minister K Palaniswami and his now deputy O Panneerselvam merged after deposing Dhinaknaran as deputy general secretary.
Dhinakaran had been claiming that a verdict favourbale to the MLAs would lead to the fall of the Palaniswami government.
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During the hearing of the petitions which commenced on November 16, senior counsels for the respondents including the speaker, the chief whip, and the chief minister defended the disqualification of the MLAs.
The crux of their argument was that the MLAs had approached the governor with the intention to topple the government headed by Palaniswami and thereby attracted disqualification under the anti-defection law.
The Speaker had passed the order based on irrelevant considerations, ignoring relevant considerations which was malice in law, Singhvi has contended.
It was also argued that the impugned order was passed by the Speaker in gross violation of principles of natural justice.
Senior counsel Ariama Sundaram, appearing for the Speaker, has argued that there was no haste, mala fide or perversity in Dhanapal passing the order.
Another senior counsel C S Vaidyanathan, representing Palaniswami, has contended the courts do not have jurisdiction to hear an appeal against such actions of the speaker.
Senior advocate Mukul Rohatgi, representing the AIADMK chief whip, has said the MLAs had failed to resolve the internal party issues by approaching appropriate intra-party platforms.