Lucknow/ New Delhi, Aug 13 (ANI): Samajwadi Party chief Mulayam Singh Yadav on Wednesday said that he is ready to join hands with his arch-rival and BSP chief Mayawati if RJD chief Lalu Prasad Yadav mediates in this regard. Mulayam was responding to Lalu's recent suggestion that Mulayam and Maywati should also joined hands in Uttar Pradesh to defeat the BJP in the same way as he has allied with his bitter foe Nitish Kumar's JD (U) in Bihar. Ending weeks of speculation, Lalu and Nitish last week came together and launched a joint campaign for the August 21 by-election to 10 assembly seats in Bihar. The two former chief ministers shared stage after nearly 23 years, marking the beginning of a new phase in the politics of the state.