Modi has often been targeted over his humble "tea seller" background, which he invariably used as a stick to beat his rivals with.
"Berozgar yuvao ko pakode ka thela lagane ka sujav ek chaiwala hi de sakta hai. Arthshastri aise sujav nahi deta!!!," (Only a tea seller can suggest to unemployed youth to sell snacks, an economist would not do that)," Patel said in a tweet today.
Patel had backed the Congress in the recent Gujarat Assembly elections.
His tweet came after Modi, in a recent interview to a television channel, reportedly said: "If a person selling pakodas (snacks) earns Rs 200 at the end of the day, will it be considered employment or not?"
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In the run up to Gujarat elections, the Congress's youth wing mouthpiece, 'Yuva Desh', had tweeted a meme on the tea- seller background of Modi.
It showed Modi, US President Doland Trump and UK Prime Minister Theresa May in one frame. Modi was shown mispronouncing the word 'meme' as 'main main', prompting Trump to correct him. May was shown telling Modi: "You go, sell tea".