While Jadeja was warned for his over-the-top celebration after dismissing Australian opener David Warner, Ishant was cautioned for giving James Pattinson a send off after disturbing his timbers at the Feroze Shah Kotla stadium.
In both the cases, Pakistani umpire Dar had a word with India skipper Mahendra Singh Dhoni.
Jadeja had started celebrating the Warner's dismissal after trapping him plumb in front of the wickets even before the umpire had raised his finger during Australia's second innings, which folded up for 164.
Dar then called Sachin Tendulkar, who in return spoke to Jadeja. Later on, the umpire had a brief chat with Dhoni too.
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Jadeja was involved in a verbal spat with Warner yesterday during India's first innings when he had shown the handle of his bat to the Aussie opener.
Both the captains, Mahendra Singh Dhoni and Shane Watson, had to intervene to stop the verbal dual.
In Ishant's case, the Indian pacer could not keep a check on his emotions as he pointed the pavilion to Pattinson after dismissing him in the 45th over with the visitors' at 157 for nine.
Dar was then seen discussing the incident with other on-field umpire, England's Richard Kattleborough.