The 27-year-old, who did not feature in Pakistan's first four matches of the World Cup, marked his debut at this tournament in style with a run-a-ball 49 before holding six catches in Pakistan's 29-run Pool B victory over South Africa in Auckland on Saturday that gave his side a chance of a quarter-final spot.
"It's a great honour," Ahmed told AFP. "I didn't know about the record but after the match someone told me that I have equalled Gilchrist's record and that made me proud."
He repeated the feat four times, while Alec Stewart (England), Mark Boucher (South Africa), Matt Prior (England), Jos Buttler (England), Matthew Cross (Scotland) and now Sarfraz have all since equalled the now retired Australian's achievenment.
Ahmed said his catch to dismiss South African master blaster AB de Villiers was the most important of all his dismissals on Saturday.
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"AB is the most destructive batsman of all and he was threatening to take the game away," said Ahmed of the South Africa skipper, who smashed a 58-ball 77 with five sixes and seven boundaries.
The left-arm pace trio of Rahat Ali (three for 40), Wahab Riaz (three for 45) and Mohammad Irfan (three for 52) reduced the Proteas to 202 all out.
Earlier, opening batsman Ahmed launched Pakistan's innings in style before running himself out.
Ahmed said the key to his impressive knock was that he batted with a plan.
"The coach (Waqar Younis) and captain (Misbah-ul-Haq) told me to bat in my style and after the first ball I realised that I have to play out of my crease to negate the swing and that worked for me," said Ahmed.
The top four from each of the two pools of seven will qualify for the last eight.