District and Sessions Judge Deepak Gupta directed Dadlani to join the investigation at at Ambala Cantonment Sadar police station on an application filed by the music composer for anticipatory bail.
The court adjourned the matter till September 23.
Ambala Cantonment police had lodged a case three weeks ago against Dadlani and one more person under relevant sections, including 153A (promoting enmity between classes), 295A (maliciously insulting the religion or religious beliefs of any class) and 509 (uttering any word or making any gesture to insult the modesty of a woman) of IPC.
The complainant had alleged that the accused had intentionally hurt the religious sentiments of Jains by his "sarcastic" tweet on Sagar.
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Dadlani came under criticism from various quarters including Delhi Chief Minister Arvind Kejriwal, for his tweet on the Jain monk's speech in Haryana Assembly.
He had subsequently tendered an apology for his tweet on the microblogging website and later deleted it.
Dadlani had apologised to Sagar subsequently.
The Jain monk had delivered a lecture, 'Kadve Pravachan', in Haryana Assembly last month on an invitation of the state government.