<span style="color: #222222;">Prime Minister Narendra Modi spoke to Samjwadi Party leader Mulayam Singh Yadav and greeted him on his birthday.</span><br />'' <br />'' <span style="color: #222222;">In a tweet, Mr Modi said Mulayam Singh Yadav is one of the senior-most and experienced leaders of the country who is passionate about agriculture and rural development.</span><br />''