In its reaction, the Singapore health ministry said there was is no truth in the claim.
In a series of tweets on Wednesday, Jaishankar said Singapore and India have been solid partners in combating the pandemic and appreciated the country''s role as a logistics hub and oxygen supplier.
"Their gesture of deploying military aircraft to help us speaks of our exceptional relationship," Jaishankar said.
"However, irresponsible comments from those who should know better can damage long-standing partnerships. So, let me clarify- Delhi CM does not speak for India," he said.