December 12, 2001: Congress chief Sonia Gandhi and Samajwadi Party chief Mulayam Singh at an Iftar Party hosted by Union Minister Ram Vilas Paswan in New Delhi. File Pic/PTI

April 19, 2019: Samajwadi Party patron Mulayam Singh Yadav exchanges greetings with Bahujan Samaj Party supremo Mayawati during their joint election campaign rally in Mainpuri. File Pic/PTI

November 22, 2021: Samajwadi Party President Akhilesh Yadav felicitates party's founder Mulayam Singh Yadav on the latter's birthday, at party office in Lucknow. File Pic/PTI

January 18, 2006: Then Uttar Pradesh Chief Minister Mulayam Singh Yadav with Samajwadi Party MP Amar Singh at a press conference in New Delhi. File Pic/PTI

February 9, 2002: Mega Star Amitabh Bachchan flanked by his wife Jaya Bachchan, Samajwadi Party Chief Mulayam Singh Yadav and Senior Leader Amar Singh waving to the crowd at an election rally in Lucknow. File Pic/PTI

June 27, 2005: Then Prime Minister Manmohan Singh exchanges greetings with then Uttar Pradesh Chief Minister Mulayam Singh Yadav at the 51st national development council meeting. File Photo/PTI

June 27, 2005: Then Chief Ministers of Gujarat, Uttar Pradesh and Tamil Nadu; Narendra Modi, Mulayam Singh Yadav and J Jayalalithaa at the 51st National Development council meeting in New Delhi, File Photo/PTI

November 22, 2021: Supporters celebrate Mulayam Singh Yadav's birthday at the party office in Lucknow. File Pic/PTI

July 18, 2022: Samajwadi Party patriarch Mulayam Singh Yadav during voting for the election of the President, at the Parliament House in New Delhi. File Pic/PTI

March 19, 2017: Prime Minister Narendra Modi and Samajwadi Party founder Mulayam Singh Yadav exchange warm gestures during the swearing-in ceremony of new Uttar Pradesh government in Lucknow. File Pic/PTI